Hi
I have an ASR33 that is similar. I've just not had time
to tinker with it.
When I got it, it seemed to be missing the power board
for the reader. I finally made one with a piece of
vector board.
I had the machine and stand shipped in two packages.
I'd not opened the stand because I had't finished
fiddling with the unit.
I needed to make a little more space and guess
what I found in the box for the stand. you guessed
it, the supply board for the tape reader.
The H plate is easy to do, jammed on the end of
a screw driver blade.
Dwight