Originally Posted by grizz1

I am running .6mm shimming on my MMods 5 Port (.3 mm alloy shim, plus the built in .3 in the head button). This is .2 mm down from the standard .8 mm and has dropped my pipe temps a little, plus the motor is performing very well.
It also allowed me to change from an OS P3 to a cooler RB#5 plug.