I have spent some time today to clean a K2 tank from 2k filler where the Honda badges will sit. Tank was previously painted and no badges, everything covered by filler.
I had cleaned all paint before, only the filler on where the badges will sit and under the plate.
I used paint stripper, the good one with forbidden chemical. I had to splash on some gel, wait 30 min, carved out filler, more gel and wait, carv again with small screw driver and thin angled allen head tool.