Ok I got the new Si hollowgram cranks installed with the new 109mm spindle. Here is how I installed them to give the clearance that I was happy with and have the cranks spin without binding on the bearings.
1. Put new bearings in since taking out the old sometimes damges the bearing.
2. put the new axel in with the directions on the axel (drive side specific since bulges are there for the bearings to sit on)
3. I evened out the axel which puts it in the right place.
4. (Drive side) Bearing shield, 1 plastic spacer, wavy washer, 2 plastic spacers then spider with crank.
5 (Non drive side) Thick aluminum spacer/bearing shield from Carbon Si cranks, 3 2.5mm sram spacers, crank arm.
I will note that with this setup on the drive side the wavy washer is not flat but compressed which keeps the bearings from binding. So far I have ridden 100 miles with them. Tommorrow will be a better test since I had 2 too many plastic spacers on the drive side last week which caused the bearings to bind. The only downside to this setup for other peaople is getting the thick spacer from the carbon cranks if you don't already have them.