Lj
Did you remedy it?
I used the MCA sealant (figured they are much of a muchness as are all basically a 2 pac epoxy) back in summer, followed instructions waited for nice hot day, left in sun all day, took nearly 3 days sunbathing to cure & become non tacky
poked finger in tank the other day, tacky! can scrape off with fingernail.
stripped carb all clear, runs fine.
I'm guessing nothing short of paint stripper will get rid of it?