A lot of things have happened since my last post. As it turns out brushless + 6s lipo = very, very, very powerful... My fiance and family members pooled together and bought a pair of thunder power 3s 4900mah 40c lipo for my birthday. Because of the new batts I spent most of the summer replacing the drivetrain. I also had a lipo go bad on me (thunder power replaced the batt under warranty) so I really didnt have a reliable truck until the end of summer.
I had problems with the roll pin in the top shaft of the transmission always breaking. I replaced it with a solid steel pin. So far so good.
I also made a pin "cover" to protect the gears just incase the pin snaps again.
I also upgraded to a ue steel idler.
I will post some more pics of the chassis and upgrades later this week.