Help! I'm stuck on Step 5. Upper leftmost screw refuses to come out and I can't tell whether I've worn down the screwhead or the screwdriver. Removal advice please. Otherwise my only recourse may be to replace the entire system. Just transfer everything datawise and be done with it. It'd be a shame if I had to admit I spent $90+ on parts & tools for nothing just for it to come to this. And I don't even want to think about how much a new unit will cost on the secondhand market. I'll be lucky to find one at it's original MSRP.

Are there alternatives to the Spudger and/or Opening Tools that one might already have available from home?