[Mikey350D]

Anybody got an idea why this would happen?

Tip of right intake cam lobe worn down.
7 hours on Faction intake valves/springs.
Bike did run slightly low on oil
(1/4 on dip stick)
I'm suspecting loss of oil.
Will check oil passages and insure I have correct intake springs.

Thanks

[Monkeywrench]

How does the LH lobe measure up to specs?
How does the RH lifter bucket look? (any heat damage or discoloration?)

[Mikey350D]

Getting worse as I dismantle motor:
Rt lifter was completly worn thru.
Oil on piston and rt intake valve looks oily.
(motor was using oil)
Rt intake stem mushroomed and
Can't get keepers out.
Looks like some "chipping" on outer edge of left intake seat.
Beginning to suspect rt valve guide/seal/or valve stem bad, causing loss of oil...
cylinder looks fine.
Bike started mormally.
Only sign of failure was high rpm stutter/loss of power.