I like.... so any notice of fatigue in the pillar? or is it still very stable? You went higher than I am/need to go. Looking at mine... I went too high I think, oh well, a rock will take it out anyway.
What gauge did you cap the pillar off with? looks beefier than the rest...
I used 1/4" angle and weled that first. Then I welded the filler sheetmetal.