I have 205 hours on my trusty 2005 250 exc, I pulled the reed cage today to take a look at the reed valve. The reeds look fine, no chipping, cracking or warping, which surprised me. Should I replace them anyways? The bike seems to run fine, but I have had it for a long time and would probably not notice a gradual power reduction. Can they lose tension but still lay flat?BTW I have a Boyesen RAD valve.