Johnson 150 running issues

[jasoncooperpcola]

Today i went to run my 1985 Johnson 150 on a 6 gallon tank with fresh gas and it wouldn't run below 1000rpm. If i turn the choke knob it will run rough below 1000 rpm. When i hold the carbs open a little it will crank and run beautiful. I try to run this motor once a month on fresh gas with stabil in a small tank but its been three months since i have run it. Tomorrow i plan to check plugs. What else should i check? I am beginning to think its a carb issue. I do not know when they were cleaned last. Right now i have adjusted the throttle cable out so it runs good. But i hate to cover up a problem by doing so. Anybody got any suggestions?

Also i have a 25" shaft Yamaha 150 2 stroke i may put on but need a remote control.