RE: Wiseco's.
If your the type of rider who likes to just pull the cord, and rip away, wiseco's arn't for you. They are MUCH more sensetive to bore/piston fit. Cast (OEM) pistons can take more abuse in this respect.
Forged pistons require that the block be up to a resonable operating temp before you get on it, because the piston will expand very quickly as it heats up, and the bore expands slowly... Picture a cold block, a dude hammering on the throttle. Now watch as the piston grows, and then does a 4 corner siezure in the block. That is the most common occurance with wiseco pistons.
I have put on roughly 1000 miles on my sled since installing wiseco pistons.
And yes, the most important thing, is NOT to fix the symptom, FIX the disease. Find out why it burned down in the first place. Otherwise you will go through pistons like underwear, and that gets expensive!
-Dean