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Long story short get a call to help swap some fm777 cams. Ok bike is stock fm cnc heads fm 777 cams. Se adj pushrods and se lifters. It appears the exhauste valve is hanging open till lifter bleads off.... rolled motor over started over same issue. Removed. Adj rods. Same length as stock. Any ideas or direction i might be missing here. Oh. 2012. 103
 

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What lifters?

That does sound odd. Almost sounds like the pushrods are over adjusted, but if that were the case then they would not have room in the travel to bleed off.

You may want to check the cams to see whether or not those cams use the same base circle dimensions to stock.
 

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When adjusting the pushrods did you wait 15 minutes or so and see if you can spin the pushrods by hand?
You can't get the cams out of alignment or in the wrong location but you can get them out of time but that wouldn't cause your problem.
You can bottom out the lifters causing the lifter to not bleed off when adjusting them.
How many turns are turning the pushrod when adjusting them and are you turning them the required turns according to directions?
 
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