Underpasses can be killer crawling grounds. There was an actual club-comp crawl last year at one near here. "thumbsup"
My last Ascender project was to remove both driveshafts from my original K10 RTR - my first crawler. I found worn pins in my comp crawler so wanted to check this one as it has a LOT of miles on it - has trained 4 drivers as well.
Yes, very worn. Not ready to break worn like the other one, but putting new pins in really tightened everything back up. And yes, you have to grind off the end of the two that fit into the bearing race on the diff-end, but they work very well.
Got my stencils for military markings for the Nukizer...12" WB. Ready to paint and mount.