Great.

My weston 36v1 has been munching plugs.
I have changed the type of fuel and gone higher nitro 16% from 10%. I prefere this newer fuel with edl as its contains 18% oil and more oil than recommended.

I was unsure if this was because the higher compressed engine and higher nitro was causing this or its lean.
Trying to understand how to concude which one causes the blown plug,1st time around.

My high speed needle seems to be half a turn out to get on the pipe,yet also unsure if shorter manifold contributes too with overheating.

Couple this with hot/cold plug to suit the nitro creating variables. Cold used.

A plug every run, is what I want to advoid. My 50v1 can go 10 runs at least. I had no idea to expect regular plug blows were common with well tuned engines

So guess the only way to see how well the engine is behaving is monitor the new plug after the first run as subsequent runs after could be missleading due to their immenent destruction from repeated use.?

So drop the nitro instead of shimming for nitro for higher compression engines at the expense of maybe more power?