Carl... That was a great contribution in a hands on manner, through experience tempered with enough detail to warrant further discussion. The vintage original camp scoffs so much about keeping things stock, you know the one's... the "Collins Cork Sniffers" and I get that, I really do. Car collectors, especially Concours types wrote the book on such things, but then you cant' drive a car on the original 50 year old battery, tires, belts & hoses etc. The same applies to the A-4, and if you want to actually use the thing, or better yet, keep it to use for years, then it makes sense to modify the radio to work well instead of marginally acceptable. A stock Porche 911S will never keep pace with highly modified versions on the course, and so the story goes. I get that too. There is also the aspect that one must consider: The time invested in making the radio worthy of using. That is also another part of the hobby many of us enjoy, which involves the learning and doing process of making it a better more useful tool (toy) to enjoy... without too many expletives, Sound familiar? Obviously, not all of us have access to lab grade equipment and the experience in using said equipment to the degree where we can make profound decisions that result in the radio you described Carl. That is achievable for some but for many just a speck on the horizon. For me, I like a challenge and with the meager set of lab gear I own, am capable of slogging through such a project while allowing time for certain details to sink in and make sense before I measure twice and cut once. I really could care less about the vintage thing except for cosmetics, I/E no holes drilled in the face or badly thought out locations for circuit improvements. There are two other realities that exist in the vintage gear market that should be acknowledged when considering selling an A-4, Originality and performance. A Howard Mills restored piece can bring kilobuck returns, while a highly modified, high performance beast may not. But then, buyer motivation is the X-factor and that's where the truth lies every time. I wouldn't pay 2500 dollars for a HM radio because it would be a show piece that becomes a worry wart. Screw that. Give me a rat rod that barks the rubber in all 4 gears and makes the chicks turn their heads. I would love to have Rob Sherwood join this conversation. That would be interesting. More next week after I return from LA. Onward!