I have a 1998 300EX and i have been having some issues when i increase the throttle. It cranks up just fine and when you first start to go, it does fine... but when you start to give it more gas it starts to throttle way back, and you have to release the throttle to get it to start going normally again. I changed out the metal gas tank with a plastic one because it was starting to get a good bit of rust, and i replaced the petcock and cleaned out the fuel tube. Is there anything else i need to clean out to get it running correctly again? I looked inside the carb and it looked clean, but i didnt really take it apart being as i dont know how and dont want to tear it up, could there be something stuck in there i cant see? thanks for the help!