Final update:
The assembly arrived yesterday. Got around to swapping the parts today. All is well in Twinville! Took a couple passes through the trail behind the house and down the driveway just for S&Gs. Thanks to Homestead and @thoyt !! View attachment 127084
initially I thought “Why is there a partial set of extra tines in the background?” Then I realized this is the happy resolution of a mistaken shipment. It’s great when a company will do the right thing. It’s certainly the exception anymore.