well my 04 bruin 350 wasn’t running. my buddy and I were about to clean the carb, but noticed there was no gas coming out of the tank. So i replaced the fuel cock and got it running, but not running good. Now not at all again. I put my hand over the air filter box and it started for a few then died. Took the filter out and was attempting to clean it, but it just came apart. Is this my problem? and if so, where can i find another filter to fit in my box?