Hi Chevvron
The pin
stowages were always on the left side - there were of course 2 x pins fitted on the RH side (MDC Handle at the front + the MDC sear by your right shoulder) - the MDC sear pin being removed before strap in and the MDC pin removed before engine start.
The original final 2 pin stowage (Seat Pan Pin and MDC Handle Pin) was on the LH Canopy Rail (as I posted above) but was modded to the glare shield in the 1980's to be more visible to the ground crew (as I mentioned above).
Originally the start crew would always be on the left because the steps were on the left (both built in steps + ground equip steps) and the canopy hinged to the right (hinges on the right) - we normally did single man starts at Brawdy when I was there 1977-80 and I continued doing single man starts on and off until well into the 2000's (note - I never was based at Valley
) - I know Valley did 2 man starts !