I process 35mm, 120 and 4x5 with my Jobo CPE2 Plus. It has only one speed which is around 75 rpm and have never had any problems. I give a 2 minute presoak before development. I have used D76, D76H, D23, XTOL, PMK Pyro and PyroCat and no problems with either uneven density or sprocket surge problems.

- Mike