I used used a precision screwdriver #00 from ace hardware. Works on Vader to iron man to the remote for your car when you need batteries changed there too. I think it's ace hardware item 2167138. The top rotates to so when u screw things u can add pressure pushing down as needed but also easily turn the screwdriver at the same time as well.
just checked aceharware.com. Put that number in the search box and there it is. $4.99. Should be good to go...
Thank you very much Deathstalker!