For us mere mortals who run their T Gauge trains every now and then as time permits, I have come to the following running protocol to get my 9 car HST set running well:
1. Run each power car and buffet car separately for about 10 mins, after applying Condutalube to the wheel pickups (previous post)
2. Hook up just the power cars and buffet car..run all 3 briskly for about another 10 mins
3. Add the two first class coaches..run for 5 mins
4. Add the 4 second class coaches and we are now running pretty well
This has got me going pretty much all of the time...you simply cannot just pick these up from several weeks of inactivity and expect them to run like an OO/HO loco..
I think the "pros" who go to train shows have a warm up loop..I certainly would if I showed my T gauge sets...