Hi. I have a new arcfeed 300 and I am struggling to get it operating correctly. I am running it off an arcgen 330 cc engine driven welder. I am experienced in mig and arc welding. I have a Hobart hefty cc cv wire feeder that works perfectly with the arcgen. I can't manage to get the arcfeed running properly. I either have too much power and not enough wire or vice versa. I have it set to cc on the panel. I contacted our kemppi dealer and he came to our workshop but had no experience with the arcfeed either. The arcfeed comes with a large and a small gear. I have tried both. In the information, it says that you need to change the jumper settings if you fit the larger of the two gears but I have looked at this and can't see where to do this. Has anyone any experience with these and an anyone help me out please? Thank you.