Thanks for the replys guys, sound like I should flip a coin between Terpstra and Fayes and be prepared to bend over and grab my ankles when I pick up my boat anywhere I take.
I have a 80's OMC, I need the carp rebuilt and have everything adjusted correctly(idle, fuel etc air mixture) . My boat is at Just Add Water in Hobart and they told me they are not comfortable working on older boats, they are not familiar working with OMC parts and would have to special order them, and since I don't have a service manual they can't gaurantee they will order the right parts unless I give them the part number and they would be guessing on the adjustments.
Already tried Erwins, they won't work on OMC's