I’ve only been pumping for 2 months but I had the same problem with erections in the beginning.
I took some days off to rest and restarted the beginner routine but I started at 4mg. I slowly introduced 5mg into the routine but only after being at 4mg for at least 10 mins.
I can now edge as soon as I am out of the tube. Before, it was a limp sponge.
Give low pressure and increased time a try.
Start 01/03/2012: BPEL 5.5" EG 4.75"
1st Goal: BPEL 6.5" EG 5.0"
Current: BPEL 6.625" EG 4.85" from the Linear Newbie Routine