Hey guys new on here but not new to 450rs. Anysways I bought a fixer upper 2004 450r and the first time riding it, it was getting extremely hot so I decided to pull the carb apart and check out the jets anyways it had a 118 main (stock) in it. Air box lid was on but has a full white brothers exhaust. I ditched the lid and stuck a 178 main in it, has hrc needle on the third clip and a 48 pilot jet In it. Now it won’t open up past 1/4 throttle and just pops and cracks. Tried the fuel Screw from 1 turn out up to 3 1/2 and no change. Any ideas? Is my main too big?