Okies. I just use the feeler gauges to begin with, as I see no point to doing additional redundant work, but whatever floats your boat man.
But 1/2" is really bad, your head is smoked at that point (these gy6 heads aren't very good quality). I suggest checking the low end as well, as if this damage occurred while the bike was running it could very likely have damaged the low end as well.
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2011 Roketa MC-23-150
4T 150cc 157 qmj
24mm carb w 115 main jet and paper cone air filter
Manual petcock w Tygon fuel lines
Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust
RED spring clutch
Adjustable CDI (brand unknown, it's blue and red and works great!)
KOSO high performance variator w 12g sliders
Gates Powerlink 835-20-30 belt
GPS verified 65mph on flats.
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