my blaster keeps running like crap. it will run fine one day and the nex it will be junk again. the plug keeps fouling too. do i need to re- jet ? if so what jet size? im at 30ft see level. aned im bout to drop the injector and run 32:1 instead of dumping 20:1 like the injector does. somebody please help.

 

actually your injector varies the mixture as RPM rises, being something like 60:1 at idle and 16:1 at full throttle.
Banzai!!!!