Received the condensers today! I will start replacing the old ones. SInce the chassis is for the most part solid, I won't worry about underside looks. For the paper condenser on the top-mounted lug strip, I will hollow out the old cardboard tube and install the modern one, and seal it with wax and hot glue. I'll post some pics when I do that. As for the large input condensers, I'll leave those mounted on the chassis but I will disconnect them and mount the modern ones underneath. I have read of cutting them open and potting new ones inside, but I don't want to ruin them. It'll be fine to hide modern ones underneath... there's enough room.