I had the brush assembly in the starter corrode up so had to open it up in situ to get the brushes moving again until it could be replaced. For those who haven't looked there is a seal half way along the starter motor body which from what I can see could easily let damp in and as I have said before I would NEVER jetwash anywhere round here. If the starter motor performance drops then it seems to stall and drag the voltage down when initially turning over which I believe caused issues for the ECU. When mine was replaced under warranty the starting was totally transformed. PS Don't want to get into the politics of it but Rob has been incredibly helpful sorting some bike issues out for me remotely when I was relying on the bike daily to visit a family member in a distant hospital. He's a modest guy but has a lot of bike maintenance and restoration skills.