Funnily enough - Just spoke to my local Royal Enfield dealer. They trade other bikes also and are a good size company and well established and a respected business.
Mentioned the 310 issues (not the dealer issues) to him - He told me he has had several come back to him that he has sold that then later had issues (this is the main mech I am talking with today) - Numerous electrical faults which can be a real pain to diagnose, bearings disintegrating in the gearbox, transmission issues and rebuilds. In short he said he will not stock them, or let them be traded in anymore. I had no idea of this when I spoke to him today. He also mentioned the lead time from the local dealer (he didn't know we had the same dealer) are shockingly long (several months in some cases) and have been like this for years (even pre covid). He wont stock BMW at all anymore!
Interesting conversation today.
It seems if you are unlucky to get a 'bad' 310GS they can be a REAL headache! Including with our local BMW dealers being utterly useless to sort anything.
Just found out they do the full cam shaft upgrade in house on the 411 RE for £350 all in (icl parts), for 20% more engine power and a nice lot of increase power curve on the dyno.
All in the whole expense for the brand new bike and the upgrades is the same (with finance interest) as the used GS310. Would bring the HP to about 29HP.. much closer to the BMW HP.
He was explaining how when all these bikes - KTM, 310, and others get issues they are a pain to sort very often.
Best thing - nothing to really go wrong on them. Test riding a few again in the range tomorrow. Spring around the corner - lets get dirty!