What I need is a 850 carb with a broken base plate or worn throttle shafts. I bought a new 850 base plate and I was told that it would work on the 750 body and it would increase my cfm. My 750 plate is cracked so this is what I wanted to do. The holes between the 750 and 850 main body are different so this will not work. I would really like to go to the 850 carb but if nobody has parts I might have to go with another 750 base plate. Maybe trade? Thanks in advance.