I have an '87 Tristar with a 351. Floats are adjusted correctly. Idle screw is set to idle at 1000. Air mixture screws are correct. When I first start the boat, it idles at 1000. If I run it for a bit at 35+ mph, then stop, it idles at 1800 in neutral. If I turn it off and re-start it, it drops to about 1400. If I start it up and run it at wakeboarding speed, it isn't as pronounced. The idle goes up to about 12 or 13 hundred. I was thinking air leak, so I replaced the base gaskets on the carb and spacer. No difference. Anybody have any idea's????
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