It was the metering block gasket. When I pulled it off the first time it tore a little so I replaced with one I had got before and never used. Apparently there are 2 different ones for the 4160 and I used the wrong one. I got a kit at the MC dealer today and it came with 2 different ones.
BUT with all my screwing around trying to figure it out I think I messed a few things up. The boat is running great, but I have the mixture screws all the way in. If I turn them out the RPM's go down. Maybe the float is too high? Any ideas appreciated.