Trouble with PS2 DUo2SE chip

[20cobra01]

First of all thanks to everyone, I am currently in tears of joy. Spedmetal I am in debt to you and currently considering naming my second born after you. Turns out it had to be the laser. I tried booting the original castelvania and had a successful boot with the chip enabled. I took the top off of the disk drive and swabbed it down with some alchole on the end of a cue tip, and just like that the back up version of Castelvania booted up. Next up was one of the back up version of my GTA San Andreas, at first it got stuck in a loop with the memory card / play disk screen until I tried a roboot and then it booted as well. I can finally put this one to bed and start fully assembling my PS2. Thanks, everyone was very helpfull and kept my sainity in check while getting this to work.