has anyone ever used mohawk finish if so what did you think.

I started using Mohawk UltraClear Conversion Varnish last year. Mostly because all the CV I had been using previously was discontinued or unavailable for shipping.
So far, so good. I like it. High solids. Plenty of pot life, good flash time. Sprays nice straight out of the can. I don't use a HVLP gun. It's self sealing, but I still like a vinyl sealer underneath.

The Mohawk pre mixed?

I'm sure Mohawk makes some pre mixed, amongst the hundreds of products they manufacture.
I've only used one of their many conversion varnishes, which is a two component cayalyzed finish.

I was looking at the spray cans.but I decided to go with krystal from big jims. thanks for the imfo.

Krystal is good stuff. I was using it until my local supplier discontinued selling it. I wish Big Jim sold it in finishes other than Dull.

I base coat with epoxy then top coat with Krystal dull. The Krystal to me shrinks too bad for base coats over time. Just wish the epoxy was cheaper.