Incredible nice job putting those together better than new.
Looking close at the extreme wear section, the set of wheels (4) positioned where they are on the rails.
Couldn't they be moved forward some, and add another wheel forward of those at the apex.
The 4 where they are doesn't look to be a huge advantage point.
Could this be a track that's a little tight? Or hard pack dry conditions?
We seem to have the wetter snow in Minnesota.
I've seen scratchers in ad's, and would these help in the drier hard pack snow?
Now these wear buttons, and this is the first I've seen of them.
Seems odd they are steel faced.
I'd think something slippery like teflon, or the like.
Then probably wear faster. Trade offs perhaps.
I have very few miles on my sled, so my experience with any of it is slim. I plan on making some changes after seeing this.
That's one heck of of a project You had there.