They\'re not very big fans of mixing the 20 im pretty sure, but they will do it. They said they moved to 30 due to conplaints from this board, the results are about the same and they dont have to spend the time titrating. I think it comes down to feel difference. I dont mind the 30, and i have more critical people examining mine than most of you guys. Just commit to proper aftercare and really listen to their instructions to prevent irregularities.
Like said above nothing is wrong with their mixing technique, they don\'t need different machinery. You do need to give prior notice.
I have all three concentrations also. Last round was the 10/30 split, happy with results. I wouldnt put anything besides 10 by glands.