Help me understand my Emaxx

[turbo4]

Ok, here are some pics. The problem is the spring perch sets on the slider shaft before pushing the shock over to bolt it on. If I was to shim it out to miss the shaft the spring it self hits the inside of the upper arm, in fact it hits the arm even if pushed over in the "bolted position". Its like the arm wont allow the whole shock to move any directon to clear the shaft if I tried to shim it. These are the RPM arms and the stock towers. I tried all available hole both in the tower and lower arm and none provide clearance to the shaft/perch/arms.

[turbo4]

Here is what Im thinking if I cant find a solution to work with the prolines and the sliders. Looks like traxxas has some cvd's coming out and cheap. Can this price be right? If so I'll just run my stock shocks for now and order these shafts. Then make the swap back to the prolines when those come in. I dont have to much $ tied up in the shafts. I wonder if that price on the cvd's is a misprint as the center shafts are much more.