I'm not sure how old the engine is. My friend had it for 2 years and he bought the Tmaxx used.
I've swapped Glow Plugs and it doesnt change anything.
I'll play with the adjustment a little more but I haven't had any luck keeping it stable with the lsn thus far. maybe it is the clutch? When people talk about the clutch do they mean the slipper clutch or are there multiple ones in the trannys? I haven't opened it up.