I take all my stuff to a commercial stripper, plastics, alloy & steel. Most plastics are not affected EXCEPT Elsinore side plates. They melt/dissolve very quickly. I have used most of the brands myself as well, and have found the same. Elsinore mudguards are not affected. I don't know if the brand Mainline uses will harm the side plates, but be very careful.
Cheers,
K