So I start putting my motor together today and after I got the crank in the left case half, I find that the crank won't even rotate because the rod is protruding so far from the crank webs that it rubs against the housing. I bought this crank from a fellow ebay member stating that it is a 3mm vito's crank. I found out the hard way that it was'nt. So I get on the phone with Vito's and explain to them the situation and after a few careful measurements we determined that it is a 6mm stroker!! So now I'm bummed out because me and my son wanted to go riding this weekend and now I have to buy another crank. Never heard of 6mm stroker for the blaster before. If anyone's interested, I listed it on ebay for less than what I payed for it.