Just rebuilt the top end on my Blasty about a month ago. I got in a hurry to ride and bought Valvoline 2 Stroke motorcycle oil for maybe $5.00 a quart with 87 gas. (Bad Idea) My motor was bogged down a little, pinging and chattering and lacking power. After about a week or two, I broke down and drove an hour to a race shop and picked up a few 12.9 oz bottles of Bel Ray for $9.00 a bottle and mixed it with high octane gas. Ouch! But...no more engine noise AT ALL, a significant increase in power and she's purring like a kitten. Learn from my mistake. You would probably rather eat filet mignon than dog food. Same with your blasty. Feed her the good stuff and she'll reward you for it. Any other crap parts = crappy performance stories?