I dunno if anyone else has had this issue, but I'll go ahead.
I got the gamebit head in the mail today from Vader (thanx man!) so I decided to try it out in the screwdriver set I got (has 2 dozen heads). Problem was, it didn't fit!
It fit in the screwdriver no problem but didn't fit in the hole where the gamebit screw is on a NES cart (I know Tengen carts require different bits I've noticed). Anyone else experience this?