I have the same issue after I installed the new injectors, and I believe it is definitely timing related... I am in the middle of advancing my timing a bit to see if that helps, which I think it should, but will let you know the results. It could be a bit, as I got started, and decided while I have the forward battery out, and had to remove the upper rad hose the get a wrench in there properly to get at the engine side bolt, I might as well do a coolant flush and install the coolant heater pump all at the same time. I may not get around to finishing everything until the weekend as I am busy every night this week!Could timing adjustment have any play in this embarrassing mosquito fogging? No idea...
Ol' Bets is looking pretty darn good! Glad you are happy with the RTT!