Triple checked the retaining star washer for the Husky OD, it's correct. Paranoid after hearing all the horror stories.
Speedo isn't working, new cable, tested with drill at install, works. There's a fine balance with having the squared shaft on either end, mated to the drive mechanism length wise on either end, or perhaps the gear in the T case is worn. I need to test further, I have the old cable, may connect and hold in cab to see if spinning while driving, seems an easy way to rule out or identify speedo drive gear or if the repro cables are too short and require finagling.
Update: called Carl at Walcks for a rebuild kit for 4693, asked about his cable, black, which I also have, but installed a gray one (no idea where). I think I may have not had the square drive aligned in the speedo the first time using the black, and grabbed the new gray one. I tested Walcks, works so I know the cable and speedo are good. If the issue continues once I have the black reinstalled, it's the T case gear.
I need to spend some time tuning the Weber 38, runs fairly well out of the box, doesn't want to idle coming to a stop unless I blip, then it idles fine.