I succeeded using the pencil method as described. Going 180mhzt, didn't want to risk 200. I can't lie, I got a bit nervous when I saw how small eveything is inside, and I do build full size computers. Anyway it worked. One complication, the screws that hold the rom board on were glued!! Didn't matter though, I was able to sneak the screw driver in anyway to release the one screw. The speed difference isn't dramatic, but noticeable.