god I thought it was because I was repairing a sibling's ds that had something spilled on it (idk maybe that they didn't clean it good when it happened) but continued to struggle even with screws that looked fine... wish I had checked the comments sooner :/ Please like the above, update this guide! It sucks knowing that someone like me is also gonna probably miss this. I didn't get super far but well. I already stripped down some which sucks either way. Ironically, I noticed that using a size slightly smaller gets the job done better. Ironic in that you'd normally avoid that because it's more likely to strip with small bits scrapping the inside. But if you are real careful it can hang on and twist. I'd recommend just getting the JIS but maybe this might work for some- I also want to emphasize SLIGHTLY smaller phillips.