Thanks so much for enlightning me regarding the pinion. That brings me to yet another question: how does one know which pinion to go for, when using any particular motor?. or are there factory recommendations. Lets say you used another pinion other than 9 for the Mega 16/15/3, what difference would it actually make.
Sorry for all these questions, but I am trying to understand as much as I can,
Thanking you in advance

Steve