I have a 98 SLTX that I rebuilt the carbs on, and also replaced all the fuel and oil lines. I took it out for a test run today. The problems I ran into were the the ski doesn't fire unless I completely choke it, and hold the throttle wide open. Then, once I get it running, I have to feather it to get it "out of the hole", but once it's up to speed, it runs perfectly. If I punch it suddenly over mid throttle, it has perfect response. However, if I hold it say mid throttle at a steady RPM, after a while, it slowly starts wanting to die.

What should I start with? Accelerator pump? I rode the ski one short ride after buying it a couple months ago before replacing everything, and it was doing the same thing.