Honda 450r have problems

[450racing7]

I bought 2006 honda 450r last year and already had it rebuilt once and been havin nothin but problems with it now the compression spring went or whatever.Any ideas

[bloodmoney23]

compression spring?!? do u mean compression ring or valve spring. Because if whoever rebuilt the engine put the rings in wrong they wont seat right and go to hell. now if it is valve springs thats a pretty easy fix and wouldnt hurt to replace them every 2 years anyway especially if you ride alot. But i never heard of a compression spring.