Got the bike back today from SilverstoneHD. Had a good chat with Steve who shone a light
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on the sidestand issue as he sees it (and gave me my bike back working nicely, thank you very much). He did NOT replace the sensor as it wasn't at fault!
The bolt in the sidestand is to alter the voltage in/thru the Hall sensor. The bolt and sensor weren't quite aligned. Steve re-aligned, plus the bolt benefited from a washer to bring it closer to the sensor. Now the bike knows when the frikkin stand is up and lets me at all those horses
Apparently the sensor has a 5V feed (and an earth and a feedback), so no need to protect it.
To summarise - if/when you get a "S STAND SYS ERR", you've got to get that bolt lined up just right and tight to the sensor. Wish I knew that a few weeks ago!
Very very good allround service from Silverstone - Again
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. It's hard to be pissed off as much when people are doing their best to help, so I'm happy again.
Gonna superglue a bolt-head to that sensor and be done with it
Newts