The Sledge stock bellcrank sucks. Half of the servo saver action is the servo saver arm rocking back and forth. My next upgrade will be an aluminum bellcrank.
The pros of a Sledge is it's handling. Traxxas adjustable aluminum turnbuckles are tougher than they look. You see what my truck looks...
I have M2C carbon shock towers on my Sledge and there bomb proof. The carbon shock towers have a bit of flex to them which makes them better for aluminum gearboxes. Not in the picture but on my truck now are a set of Vitavon gearboxes.
A problem that crept up early with my Sledge was the front...