yes you're right. I did use the M3x10 (or was it 12) that came with the case. The only downside is you lose the convenience of thumb-screws. If you change the thumb screws of v1.5 to be longer then that would solve the problem for good
so maybe #6-32?
this screw thread is spread apart farther, so less likely to strip.
however, I think the screw just needs to be longer, from 6mm to 8mm