Thanks Ilker, she's a beauty!
I spent nearly half a day today clumsily learning, by frustrating trial and error, that for an inboard diesel engine installation, correctly setting up the forward-neutral-reverse gear shift operation involves choices at both the shift lever and gearbox shift arm ends of the connecting shift cable.
When I'd finally worked this out, I rang my boat building mate to check that this was right.
"Every stupid bastards knows that you stupid bastard" was his serially illogical but supportive response.
The pic below, taken some five months ago, shows the longer dual purpose diesel engine revs and gear shift lever to the left, and the shorter dual purpose e-motor engine revs and gear sift lever on the right.
Until today, I hadn't realised that it was possible, by reconfiguring the internals of the shift lever assembly, long stroke, standard stroke and short stroke options for the cable connecting the change lever to the gearbox F-N-R lever were available. I'd assumed that stroke length could only be adjusted at the gearbox change arm end.
No wonder I've been having difficulty getting the gearbox to do with precision what the change lever was trying to tell it to do.
The joys of being a stupid bastard that doesn't know what every stupid bastard knows!
Completed R13 two part nesting rowboat. ST 21 under construction .... where seeking perfection is recognized as the enemy of the good.