i've got one of those on my route and have had to change the door operator board too. It just went up in smoke right in front of me. Anyway to my knowledge you can not adjust any speeds unless you have a tool. You do need to do a learn run on a new board which is what i ended up doing. It basicly learns the open limit setting, the default speeds were ok and nothing i could do anyway since i don't have a service tool. I'll try and pm you the info.