hey everyone my 91 seems to have a problem, when ideling it runs fine even if you hit the gas but twice now when i take off it takes off good then goes right to loosing power then pops a few times, if i pull clutch in and hit the gas it sounds fine but let clutch out no power pops then dies. i pull the plug and it dont look bad but its maybe oil fould out no spark, put new plug in and it runs great again for a few days. then back to fouling plug. it was running 20:1 mix but i changed to 32:1 befor it fouled second plug, i did check air cleaner it preaty dirty so i ordered a k&n not on yet, do you think that might be the problem or should i be looking for something else. thanks