I have a 98 blaster built the whole thing frame up ive had it running great the past few weeks. took tors out of it,oil injection, also cleaned the carb and checked my reeds and put a new airfilter in. Its piped with a stock silencer and has a stock jet but its cold starts no problem first kick but after riding it for 5-10 min it bogs until it dies and comes to a stop to get the bike to restart i have to pull the choke out and let it cool off for a minute fires right up what could it be? Pulled my plug out and somehow the gap for the plug doubled from what i had it. Set it back to what is was cleaned it up and still does the same thing.What could it be? Thanks for reading