The throwout bearing hub slides on a bearing retainer sleeve at the front of the transmission. The old grease in the hub could have solidified and gummed up the free movement of the hub. I might try removing the grease fitting and digging out the grease with a thin pick, then filling the hole...
Yup, I would suspect the shaft is bent. Try taking the starter out and removing the bendix, and spin it up by briefly connecting a battery. You might be able to see the wobble in the shaft. You may be able to straighten it by judicious use of a press.
What was the best bargain you found at Hershey this year? For me, it was an original rear axle shaft, no wear at the oil seal area, key way, threads, gear teeth all perfect, $5.00.
I suspect a broken wire or loose connection in or from the Signal Stat. With these switches, the brake light wiring is duplicated right and left, and routes through he turn signal switch rather than directly to the brake lights.
What Bob Bidonde said. More than likely it was the fan blade that broke first. The imbalanced vibration stressed the pump casting and caused it to snap afterward.
And just an observation from someone who has attended several MARC national meets. You have your majority of old fogies like me who attend, but there are more and more young people I see attending these meets.
I guess everyone has their own way of enjoying their Model A, and more power to them. One reason I enjoy my Model A is because it is simple, uncluttered and easy to work on. There's not much that can go wrong with it. I don't understand the impulse to add things that just complicate matters...
One thing about YouTube video creators that drives me crazy is when they drag out what should be a 5 minute video to 15 minutes. I found this video on my own while browsing through YouTube, but after a few minutes I couldn't take it any longer. Get to the point!!!
There was a batch of inner tubes some time back that were found to be porous. The air would just seep right through the rubber. You might have gotten ahold of some of those.