Tell me what i need to do???

[rootar]

i will try lowering the start power and ditching the punch control on the mm, ill also try gearing down to 38mph (15 tooth) and see how this combo of changes works, if this doesnt do it would a better motor such as a Nue 1512 3D be easier or harder on the MM i know the temps should be better on the nue over the xl but would it be enough to gear down enough to where i could keep the mm undercontrol?

would a 1515 2.5D be better on temps? over the 1512 3D or the 10xl??? i know itd have the torque to pull a train but i just want LOW temps and somthing to last a long time.