Hey there this is my first post so bare with me lol. I got a 04 Yamaha blaster has tors delete and oil block off kit has a fresh top end and brand new cylinder,piston kit,also has a brand new carb and reeds. It starts and idles great and drives great if you feather the throttle but as soon as you try to get on it it bogs out and stalls but will fire right back up. Also it backfires through the exhaust when i try and keep it running by playing with the throttle. If I hit the throttle wide open really quick it bogs down but if I let off the throttle as soon as it bogs down it'll stay running if I play with the throttle any help would be great thanks also idk if it matters but the carb was bought off ebay and is a very cheap aftermarket carb but it says it's a mikuni stamped on the carb. Carb was put on by previous owner as well as the other stuff I mentioned also the top end kit he put on came complete with a new cylinder and top end kit it's from ebay and was only about $70.00 including the brand stock bore new cylinder