The master of Allison auto trans
A good auto trans mechanic and shop owner in your area is....
Harry at Power Shift NW... Woodinville.. 425 487 1535
When ya call him, have all the data ready to tell Harry. He wants all the info on the trans tag. Harry has the books and lots of experience. Be ready with your engine type, number, type of bus, rear axle numbers. Harry will give ya lots of information and advice. I'm going to him shortly so he can change my trans shift points. Tell him, Frank, from Idaho gave ya this information.