so your saying replace the plug? its the original evo plug. with about 4-5 tanks on it. there isnt a whole lot of adjusting. evo uses what they call set right needle valves. they have limiters on them so that adjustments are minute. the low speed is a bar that comes out from the throttle that also utilizes the set right valve with a limiter. i have adjusted them, and it does seem to run better after it warms up. as i mentioned before, the average temp of my two times running this has been about 39-40 degrees. i dont know if i want to try another glow plug because the directions for the engine specify you cant use any other plugs in these engines but theirs. so, not sure what to do there. anyone else have any experience with changing plugs up? thanks for all the advice to this point.