[Elecraft] KPA100 assembly question

[Bob Nielsen]

I inserted the setscrews into the heatsink and threaded the standoffs
onto five of them.  The one near the back center is at a lower level
than the others, since the portion of the heatsink where this is
installed has a section milled below the rest of the heatsink.  When
the pc board is installed it rests on the other standoffs but there is
a ~.025 gap between the board and the standoff at that position.  Is
this correct?  Should a washer be installed to support the board?

Bob, N7XY