Whoever told you that the quick-shifter works in third onwards needs a backhand in the face.
Also, that guy on the YouTube channel was okay until he chickened out and said the bikes not for me because of the quick-shifter issue. It just became evident that the excuse was his content views started to drop and he needed a new bike, hence the R6.
Any who, I am scheduling the service for the cold start issue and to get a quick-shifter installed :). I'll let you guys know the outcome