It's working! My fab guy mounted the shredder up and put some chain tensioners on it. It's working alright. The biggest issues right now are that the upper chain tensioner is spring mounted (was supposed to be solid mounted) and that the shredder is close enough that I really have to watch my knees. I slid the saddle back a little to reduce the risk of injury!
I can't shred much of anything until that tensioner is mounted solidly but I'll be bringing this to the farmer's market tomorrow to show it off. Some finishing touches will come this week, including a chain guard over that huge 65 tooth