Bret - I don't know the Star in particular, but looking at internet search pictures it looks like the same secondary design as all of the 80's -90's Polaris sleds.
If that is the case (and it sounds like it) - they were tight radially on the key, but if you had the bolt out of the end of the shaft, you could easily slide them back and forth on the shaft by hand - I remember I would put a light coating of grease on the shaft when I had those style sleds for ease of maintenance.
Another thing I was taught and did (not sure if this was right), was to put spacers under the shaft bolt that were slightly smaller than the OD of the shaft so that the secondary could "float" for better alignment with the primary. Like I said - not sure if that was right or not, but remember doing it.
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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