@fraterperdurabo Your post deserves a "yes" on all points.
It's interesting what a 5 cent investment can make replacing the D-clip with an O-ring to keep the idler wheel in place on an old turntable.
My topic focuses on the lack of maturity in the "performnce aftermarket" for audio gear. Here we go, once again, on a car analogy (sorry). I would say that 100% of the guys who drive "cool cars" are aware they can make them perform better with aftermarket parts and/or application of newer technology. Yes, straight line grunt, but also, handling, comfort and safety. I would say that 90%+ of them have done "something" to enhance the performance of their vehicles (if they actually drive them). Moving on to audio, I would say that less than 10% of vintage audio owners know that there a sonic gains to be made, and less than 1% have actually done something. I've seen remarkable transformations in vintage gear while retaining its "showroom stock" appearance and functionality.
Thanks for the post.