I have a GT2B sky hawk 48cc I have everything finally line out,It ran good about 400 miles the chain finally broke.I had it aligned with the tensioner and the tensioner finally look rough too, but I have a new one of them.I just am thinking to run it without the tensioner so I took the the tensioner off and started it up and the chain popped off the back sprocket was really out off whack.So whats the best way to get it aligned the easiest way with or out the tensioner.