I was touching up some plywood what sits behind this flue cover for our new rangehood. I was first putting in primer with tiny brush and accidently dropped the little brush. Some primer dots flew and hit the powder coated steel
I wiped most of it straight away with metho but I noticed some today that I must of missed and its dried. Metho wont get this off easily now
Are there any other tricks I can try to get it off?

Also I wont use method again as its made a cloudy mark on the steel ( marked in red ) unsure if anyone knows how to make that go away either.
Thanks for any help