I had to extend the drive shaft between the #1-#2 axle, I used a 1-1/4" piece of solid Stainless Steel rod.
The springs on these shocks are really feking stiff, In this flex shot the spring will not fully compress. Maybe once the installed body, bed, battery and the rest of the electronics they'll be fine ?
I retired from RC, now life is all about guns and long range shooting.