I ran my powerhouse modded GRP and it ran 165-175 all night. The motor had 4 tanks on it before that night as well so it was basically new. go on to the powerhouse thread and ask him what the needle settings he has on his cause its dialed. The motor should run cooler not hotter after you get it modded, that with powerhouse modded motors anyway. All my motors have been modded by him and all idle better, run cooler and have more power yet still silky smooth, than in stock form. I cant believe you even got that motor in the 200 degree range.