Modding Woes

[Cyber Akuma]

I have one of those Modchip Cartridges that plug into the back, the instructions CLAIM that this thing is stealth, but it obviously isnt, since I cant get games like DDR2 and some others to boot (strange that games like Lagens of Dragoon work though, maybe its only for Jap anti-stealth games?).

Anyway, so does anybody know of a way to make this game work? I have found no patches and the gameshark code does nothing.

I have a SCPH7001

Also, if not, anybody know where I can get a very good soldering iron so I can install a modchip? I really messed up on my previous modding attempt (melted off the resister on Wire 4) because the tip was too big. Anybody know where I can get a good soldering iron (Under 15W) with a REALLY small tip? Also, does anybody have any tips (tools to hold the iron, board steady, make sure I dont solder the incorrect point, etc) on installing it? wire 4 is pretty much the only one that gives me problems, and the fact that the ddr games have such REDICOUSLY high protection is driving me nuts. I legally bought my copy of DDR2 and cant play it because of this >.<