ok, so my buddy's kid kind of borrows his brothers blaster, that is actually owned by my buddies wifes ex-husband. (its a long story) the engine locked up, at first i thought it broke the rod. turns out it was the piston skirt, which i have now found out from this site is very common on the blaster due to piston wear. i am planning on spliting the case, cleaning it out. this is a '99 blaster. should i replace the crank? and the second question is, the cylinder needs to be bored, right?