Hello everyone, I have a few questions regarding my 250 big red engine, anyways I bought this engine a while back and polished it up to throw into my trike, it started and ran fine but it smoked like something sick and ticked pretty bad! So I took the top end off to swap piston rings and timing chain only to notice a bottom half of my piston has cracked off, I found a decent size peice of it in the screen down in the bottom. I wiggle the crank arm to check for play and there isn't any what so ever, but if I grab the right hand side of the crank I can feel a little budge,but hardly any to notice, so my question is do you think this engines junked although it ran fine? Should I work with it or toss it? Thank you in advance!!!