No Start in Park: neutral safety, bushings + confusion

[blankenship]

So, my '82 euro 250 won't start in Park, but will start in neutral. Will also start in park if the shifter is 'jiggled.'

I've been reading up on various forum posts about Neutral Safety switches, shifter bushings, etc, and still can't quite seem to get a handle on my situation.

Which is:

The (2) yellowy-plastic shifter rod bushings appear fine, and there doesn't
seem to be much slack in them. I put the shifter in N and the tranny in N, and adjusted the 'rod adjuster nut,' a bit, to no effect.

My Reverse lights DO come on upon shifting into R.

I've tried to figure out adjusting the NSS, but I don't have an 'adjuster screw' on my trasmission lever that's shown/mentioned in the manuals. I've got the little spot where you're supposed to put a 4mm rod through, and it actually seems to line up when I'm in neutral, but am confused about how you'd adjust it without said screw.

Ideas about solvin' my problemos?