I have looked at the internal receiver rails with the trigger group removed and there is no significant wear with only the bluing removed from the surface. I knew the previous owner and this rifle has not been shot since the early 90's and may have had 2 boxed put through it at most. I have cleaned the gas tube, gas block and rotary lug with cleaner. I applied a small amount of Kroil to the locking lugs and cycled the action 20-30 times. Reading the above comments I will get a chamber mop in there and make sure its gunk free. I will let you know how it cycles when I can bang away at the range with it.
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When in doubt, use full throttle. It may not improve the situation, but it will end the suspense.
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