Right after my cube was chiped i rush out and bought a whole bunch of mini dvd-rs, all sorts of brand but not ritek because the place that i got the mini dvdr from ran out of ritek. They told me they would have some more stock in two days. When i got home the first thing i did was jump om my pc and quickly open up nero. Words won't describe how excited i was burning my first gamecube game. While im at it let me tell you how happy i was when i heard about the viper, been praying for the day a modchip finally came out for the gamecube,Anyways.....The first game i burn was resident evil 4 of course, burnt the game at 4x with Finalise dise checked. This was an iso image.After swapping the original game with the burnt one it started to load i was ready to play it when a disc error message came up.So i reset and tried again this time i was able to play the game for about 2 mins when the error message came up again. I don't know why it was doing this maybe the burn speed was to fast.I made other copy this time with 1x speed but the same thing happen. So i thought it must be the media, i change to other brand but the same thing happen. I bought about 6 different brands of mini dvdr, of the 6,2 would the game for about 2-3 mins,the other four brands didn't load the game at all. i tried all possible burning methods 1x,2x,4x, FSTFIX14b fix, finalise checked and unchecked, different types of burners, nero, disejugguler,cdrwin,clonecd, different game image etc,etc. After wasting about 30 mini dvdr i was about to gave up. Then i remember about the ritek brand and after waiting two days for it my headache was finally over every game i burnt on ritek was running perfect, well not really perfect. With some games you get a random dise error message, when i say random i mean it could pop up 1hr,2hr,5hr or sometimes half an hr into the game. I guess it was better then nothing. In the end i ended up doing something that i didn't really wanted to do, adjusting the lazer.Im glad that i did it because now every single game runs PERFECTLY. No more dise error messgae. To get my lazer adjust i brang my cube back to a friend on mine who also put in the chip for me, by the way he moddifieds console for a living and also a serious gamer. Sorry for the long post, this is my experince with the viper chip thought i'ii share it with everyone.