So one thing I've noticed since doing my muff mod is that for the first minute after starting cold, the saw smokes quite a bit at WOT. Is that common? Ive adjusted the carbs on both saws so they clean out of four stroking when loaded at WOT. Both of my bigger saws do it and both started immediately after the muff mods. I suppose the point of the restrictive muffler is to cut down on emissions but, holy cow, my 460 leaves me in a cloud if I give the beans when cold started. Just wondering if anyone else has experienced this?