Anyone has experience dealing with professional rust proofers? Planning to rust proof the aw11 and deciding if I should go buy an air compressor and diy or let a rust proofer do it. I started wit fish oil in a spray can but I cant get to certain crucial areas. I rang a rust proofing place a wile ago and was quoted around $500 .
I recall some of them do offer a guarantee but not sure how that works really. Recommend me some reputable rust proofers or ones that I can trust.