Hey all, I got into Amateur Radio because I like tinkering, electronics, and repair. I started with a 7300, then got a Kenwood Ts-820s, which I restored from a broken state, and now I have acquired a Drake TR-4. Soon enough I will have a spark gap transmitter (and lose my license for using it). I have the manuals. The circuit is amazingly simple given all it does! I love this older gear I can really wrap my head around. I got the AC-4 power supply with it. The whole thing was supposedly working. I got it from a friend who got it from a hamfest. I figured I would start by testing the power supply, and recapping it if the caps are original. I figured I would try to re-stuff the cans in the power supply if I can. The single section ones should be easy, especially if they have the cardboard tubes over them. I have hidden new caps in empty tubes in previous restorations of tube gear (AM/FM and test equipment). Is it worth getting the upgrade kit with the new board from the HeathkitShop ? I don't like the way the board mounts so close to the transformer. I wonder if that increases hum, but I know lots of people have used the kit and are happy with it. The Hayseed capacitor kit for the power supply is very pricey; so I am thinking either do my own restuffing/underrigging or do the HeathkitShop upgrade. For the transceiver I did go ahead and order the Hayseed multi section can. It just seemed easier and cleaner, and the price was not substantially more than ordering new, quality caps with shipping. I cleaned all the band switches and pots (no, I did not spray residue leaving cleaners on them... I have done a bunch of receivers before). I checked all the bulbs, and generally cleaned everything up. The unit is in really nice shape. It looks to have the noise blanker installed as well! Anything else I should check on this unit (other than the power supply) before bringing it up on a Variac? Thanks.