well, after fixing all the plugs, and checking the throttlebody (was pretty clean: thks kewlynx) it seems to run better. Acceleration was pretty smooth. Will see for sure tomorrow a.m. in the cold. Anyone know if the gap on the plugs deteriorate to that big, or would they have been wrong from the start?

91 SR5 Xtra Cab, 298000km, 4" lift, 56" rear springs, 33-12.5R15 BFG Mud-Terran T/A KM2.....and an '85 axle still waiting to go in.