greenthumb
Pro
The head shim is quite obvious. IIRC it is around 0.070"(don't quote me), whereas the stock is quite thin. Peek in there with a flashlight and have a look.
Where are you located? Altitude? Stock MCX boost on pump gas at sea level without a shim would be bad and (hopefully) unlikely.
I would like two think that if po strayed from mcx's instructions, that they would have understood the importance of gauges.
Where are you located? Altitude? Stock MCX boost on pump gas at sea level without a shim would be bad and (hopefully) unlikely.
I would like two think that if po strayed from mcx's instructions, that they would have understood the importance of gauges.