Idles 1000rpm in neutral and runs a litte rough

Hi, my Johnson 70hp 2000 idles high on neutral if its going to idle att 700 in gear. It also runs a little rough on idle. I’ve had many problems since I bought it. I’ve changed incoming fuelparts and filter and fuelpump. Checked spark and changed one ignition coil. Cleaned the carburators and used kits. Linked and synced. Now it works but it still runs a litttle rough and idles high in neutral. Could it be fuel recircultion? (Comp pressure is 130 over all 3) or any other ideas? Best regards!

My 200 hp Ocean Pro idles @ 800 in gear, ~900 neutral and 1,250-1,300 on a hose.

The word "smooth" has never been used to describe the motor. The Mercury outboard it replaced was much smoother on the troll.