My advice is, before you go off to a riding/cornering school for a couple of days, is to just get off in the mountains on some twisty roads for a full day or two. I bet you'll come back from that trip feeling much more at home on your new scoot.

I was in a similar situation - used to race a GS550, then a GS1000 about 3 decades ago and just got back in to riding this past winter. It was very awkward at first to not feel at home on a twisty road but some patience in the knowledge that "it'll come back to me" and just kept riding and it did.