i can say..........i have a couple TREE SERVICE companies i do, and all of have 4-5 yr old SHINE RITE on em.............and no problems. and most of these take a beating.
Yes, but do they have rivets or screws galore all over them ??
I have a ton of trucks and trailers we've done with it too....
for many cheap-skates, but none with lots of rivets unless we missed them all with super small lettering going in between the problem areas. Anyone can manage to make a few rivets work into their design, but to cover over a large amount is wrong, by all industry standards and all professionals alike.
Calendared is just a bad idea no matter how you look at it. When going over something the manufacturer tells you not to, the distributors tell you not to, your peers tell you not to and you want to see if you can do it against all odds. What's wrong with this picture ?? So, let's see a picture, then.