Hi all,
Yes, apologies for the late update. They replaced the necessary part/s in the rear wheel. The guy said the problem stemmed from the change in wheel size from the previous Agility model to the 16+ (gone from 16-inch to 14-inch on the back). He reckons Kymco didn't bother designing whatever part it was for the new bike, they kept the older version which was not compatible and therefore caused the rev limiter to kick in harder than it should. Whether all that is true or not, I don't know.
I drove the bike home and was getting speeds up to 53-54kph on pretty flat stretches (still a bit slow uphill, but I doubt that'll change). I wasn't able to push it downhill because of traffic, so who knows it might even go a bit faster. Unfortunately that was the last day I was able to ride the bike before snow/ice came through, so I can't verify if the performance is going to be consistent. I'm hoping that when I get it out of the garage in March/April it'll be all good.
Good luck if you're having the same problem. And let me know if you are able to get it fixed!
/G