N_Cook wrote:
Latching switch types ok for VCRs etc, with tight clearances but not here. 2
DPDT worn , leading to snap crackle and pop etc unless you hold the knob in
or out. There is about 2mm of play between the knobs and the holes in the
metal of the front/rear panels. Replace those 2 plus 2 more with same
flimsey 0.1 inch pin spacing switches and try and find or make larger knobs
? Replace with heavier duty switches, larger footprint , requiring
re-positioning/drilling/wiring-in ?
The 2 off 4PDT switches maybe more resilient to off axis loading so will
leave as is , unless anyone knows better.

They may well be chinese pattern copies of ALP`s switches, replace them
with genuine ALPS parts and they will be fine

Ron