With respect, this has been done to death on here
.
Some comments:-
Dinitrol manufacture one of two absolutely top notch anti corrosion waxes.
The other is Bilt Hamber. I use both, professionally, and rate them both highly,
very highly.
We NEED to see pictures to comment - IIRC, I had already mentioned this earlier in the thread....
IMHO, removing functioning wax is pointless, and a waste of money, and product. Minor "damage" can simply be treated with a proper converter ( Fertan / De-ox / et al ) and then re-waxed - again, IMHO, a relatively simple DIY job which has minimal cost - especially in the grand scheme of '322 ownership
Finally, "underseal" as a word / process / and especially as a product should be disinvented