Screen replacement adhesive failed after 48 hours!

I was so proud to have replaced the screen on my Moto Z 2 Play. My initial fear was having a steady enough hand to apply any glue to secure the new screen. That’s why I was so relieved to find these custom pre-cut adhesive”stencils” for my phone. The difficulty level for a replacement was rated as “Easy”, so I went for it,

It was a bit tricky aligning that skinny border of pre-cut adhesive in the groove, but got it done and all ribbon cables reattached easily. I ran all the diagnostic tests and got all positive results. Then after 48 hours, every time an incoming (& later discovered) call came in, the screen went blank! It took me a while by trial and error to realize that the screen had started to lift in the top right corner where the proximity sensor is. If I pressed down on that corner, the data appeared again! At least it was a short term fix, keeping the phone usable.
i immediately did some more digging and found guidance from other sources than the iFixit Guide I used to replace the screen There I found reference to the fact that some initial pressure should have been placed evenly over the new screen, at least overnight!

No such prescription was mentioned in the Guide I used via iFixit!

I tried applying that pressure, after the fact, but if it had any effect at all, it reverted quickly. The adhesive kit for this phone came in sets of 2. So, I was going to start from scratch and apply the pressure initially.But, for fear of having no phone at all, instead, I kept using it as it was and suffering the annoyance of having to apply needed pressure and such.After a few months, not only did this annoyance become more eatable, but the screen began to progressively lift more and more from the edges. Sometimes, it would not fully respond to repeated “swipes up” to answer. Obviously the touch function and sensor were not functioning consistently. (I do have to admit, that as a procrastinator and for fear of making things worse, I lived with this situation for about 8 months!

Last month, I had the opportunity to get assistance with the repair from my nephew, who is a trained mechanical engineer that assembles small electronic components all the time! He thoroughly cleaned off the old adhesive in the “track” around the frame where the screen sits. He then redid the job with the backup custom adhesive sheet. He carefully applied heat with a hair dryer. Even then, almost immediately, the screen started to lift! I clamped it overnight and the next morning it seemed perfect. But as the day went on, the screen would lift again and the original problem reoccurred. Having no more spares, I continued to reclamation it overnight for the next 5 days, hoping the recurring pressure would ultimately secure it down. That never happened!

I am so stubborn that I am resisting to giving in and taking it to a repair shop and have to spend probably another $50 for their time (all the while doubting whether they even know they”secret for success”.

I subscribe to iFixit’s philosophy of not wasting by buying a new phone or being held hostage to high repair costs. That’s why I am annoyed that this potential problem, which I now am learning from the “Community” is quite common, was omitted from any precautionary comments. It’s a bit disingenuous and sort of “dishonest by omission”.

Now I see all the references to clamps for sale and cleaning kits! The instructions mention isopropyl alcohol ( which someone I trust told me will not remove oily residues and that I needed acetone to clean), but nothing about the adhesive removal pads I see for sale here!

So, now aware of this common snafu, can anyone help with a fix, short of starting all over? E.G., can application of some moderate heat and more pressure do the trick! Should I try the UV activated adhesives or B7000 mentioned in several posts, and if so, would it be better to leave the previously placed tape intact?

One of the reasons I am not settling for the answers to similar questions, is that most of them seem to be quite old (2011-2015), often referring to a specific phone other than mine. I venture to hope that there have been some changes and improvements to the solutions available.

Thanks in advance to anyone reading this and will take the time to advise. I hope there are at least a couple “tech mavens” who monitor and are likely to do so.☺️