No clue really....but we did a flame job on a hotrod in bare metal....cleared it and it started to show surface rust about a year later...........maybe something we did wrong OE something but it did it none the less......
I also did a few parts on my last crawler in bare metal and clear and...
I'm nobody on here........but just as a passing nobody all I see is A LOT of really big welds and tube that has been "ovalized" to the point that nothing will be able to be clamped to it ..."ie" go pro mounts.......and mainly making the future bent tube replacement...