I agree the Yokomo shock caps really help in bleeding AE shocks.
However, I stopped using them because the eyelet "oblongs out" (read: slop) too soon to my liking. I think the material used by Yokomo is soft compared to AE ones.
So, I bought the AE aluminum shock caps and slightly modified my bleeding procedure.
I'd fill the shock body with oil until it "domes" on the rim then screw in the aluminum cap fully
. Afterwards, I'd unscrew the cap 2 full turns (maybe slightly more for the AE plastic caps), then slowly
push the shaft in until it bottoms out. Some oil and air will seep out through the cap threads. I, then, tighten the cap, pump the shaft several times, then check for rebound.
This method works for me (after doing it several times) and I can more or less get the rebound that is required and can get my shocks about even on the rebound.
Maybe what I do can help but YMMV...