066 magnum piston problems

My boss keeps rebuilding our 066 magnums and under normal use it blows the piston rings. Can anyone tell me what the problem might be? Im really getting sick of being blamed for doing something wrong, when it only happens to the saws he "FIXES".
 
1982,
Welcome to the Buzz!
Sounds like your boss needs a little help.
Have him go to www.racesaws.com
He would have to discribe what he did before we can help figure out whats going wrong.
Discribe what happens, how long will they run before losing compresson.etc.
 

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