Since I am using my own board design I will have to drill custom holes in the chassis for mounting. I am using stainless steel stand offs as opposed to the standard steel so that nothing rusts. I use Loctite thread locker to keep any screws or bolts from backing out. I also have the power tube sockets bolted in using Nyloc nuts, again so nothing comes loose. It’s got to be heavy duty.
I decided to move the two 68k grid resistors I had mounted on the board right to the pins of the tube socket. This will help reduce unwanted noise by keeping a longer portion of the cable shielded according to a thread on the Metroamp site. I chopped off two rows of the perf board and now it will fit more easily into the chassis.