i hope it is not a new grubee sky hawk.. i just got one and had all kinds of problems with it.. one thing after another till i just scraped it. i ordered a mega motors kit and got a old skyhawk kit. it looks to be the same as the first one i got, and it was a great lil motor, rest its soul.
so im looking forward to see if how this one holds up.
i would go with a zoombicycles motor if you can get one. its the most solid motor iv seen yet. my new skyhawk has a goofy head that smashed my NGK plug, cut a ring in my piston and had M6 head bolts thats would not hold it down or would break..
and by the way.. welcome to the forum!