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This back and forth is extremely helpful, guys-- thank you!
The engine runs smoothly and evenly now-- no misfire, just the loud tick. I will go get a stethoscope.
I just swapped to a 987 airbox and yes, that side is a PITA. Glad the miss wasn't over there.
TRK, I can't help but feel that there's an impending repair as you suggest, but I am going to do the oil and LN adapter, inspect coils due to the past misfire, and poke around with a listening device.
Is there any reason I should minimize the amount of time that the engine is running with this tick? I figure that a valve stuck open would probably impede a decent idle, wouldn't it? Since it's idling fine I think I'm ok there, but I thought I'd ask.
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