Hi Zeloko!

My experience running LRP,before your heats u need to warm up the engine first.Try to refuel not more than half tank and tune the engine,to check your low end,try to idle the engine for 30 second and punch max.If u found that it scream to loud richen a bit.Check the temp,the best is 105degree celcius.I'am running MTX4 centax 0.9,yellow shoe,hard spring and 0.4 gap.Byron 25%,0.54 head shims and plug no. 7 for heats no.8 for final.For final try to tighten a bit your 2 speed and tune your engine around 100celcius.i''ll try all this and it work for my 1 hour final.