When you advance the throttle, are you applying smooth increase or opening it rapidly? Does it stumble coming off idle such as bogging down and then take off? If so, it could either be fuel related or spark related. When I first got my boat, it would stumble coming off idle. Did a tune up and found that the plugs were gapped incorrectly and the timing was way off. As for the carb swap, mine was pretty straight forward, no mods needed other than to adjust the throttle linkage to the carb. Hope that helps.
Originally Posted by Sdc77
'86 Comp TS6M
Riding Connelly Skis and Hyperlite Boards