Hi Mark - it's a bit of a long story. I use 98 deg F or thereabouts, but right now I'm using a slightly modified developer (10mg/L benzotriazole and 3ml/L hydrogen peroxide). This is because I have 1,000 sheets of Fuji Crystal Archive C 8x10 of dubious prior storage that had a bit of yellowish base fog, and the modifications remove the base fog and punch up the contrast a bit with outstanding results. Anyway, I am finding that developing for 2mins instead of one gives best results with these mods and this paper. From what you say, it probably isn't worth removing the stop.
I also pre-rinse to bring the drum up to temp.