[rocks]

Have a rough idle, when I bump up a little it seems fine.Was wonding what your idle rpm is.Ran sea foam thru last week and had carbs checked and adjusted last month.

[05GlastronSX]

my idle RPM's on my 2005 150 merc are about 750-850 non-gps verified. re-check ur carbs again and goes from there. did you clean them or just check them? if your idle is too low raise it a bit and see if it smooths out the idle.

[studlymandingo]

You may want to get a spark-gap tester from an auto parts store. I am having a similar issue and I am currently going through both my ignition and fuel system. The spark-gap tester will tell you if you have adequate and consistent spark at idle. Other than that, you could still have dirty jets or improper seating on the needles in the carbs.