When it's running on one cylinder it won't climb above 3500 to 4000 RPM with full throttle and then slow down to the point it quits. I'll check the other things you mentioned too. Thanks!

I double checked the year it's a 1980. I will check the primer. Thanks!

I have a 340 Invader that I can't get to run on both cylinders. Last year it great, parked it for summer, went to start it last month and it would only run on 1 cylinder. I thought seals so I rebuilt it with new seals and gaskets still no good. Changed all the ignition parts CDI, a different Stator, coil, new plugs, cleaned both carbs still nothing but 1 cylinder. About the only I haven't done is try to run it without the muffler. Is it possible that has something to do with it. I'm at a complete loss.

Primers are a week spot.

well here is a little update for you guys. after some more research i have found some minor but good information. to start, the original sharks were extremely lightweight but according to pieces written about them, they did not have any titanium on them, all aluminum and chromoly.

another thing that ive discovered is that the theory that the Kawasaki sleds are sitting in the original trailer in a warehouse is not probable. the reason being, the original race trailer that was used as a transport, continued to be used as a race trailer for to the TOC sleds, you can see it in a lot of the original promo and vintage videos. the reason i believe this is the same trailer, is because the R&D budget was low for Kawasaki racing and to build multiple trailers would be unreasonable.

anyways, the research continues!