Curve ride with 250 rear wheel

Moin! I just made my moped note for relaxation for the job (on 600 Susi GSR). Dream and destination was a big softail for years, in order to do it comfortably over East Friesland’s roads. Before the start of the driving school I drove a bargain over the way, a converted FXST with S&S engine and 250 rear wheel, which I of course caught immediately. On my first trips I now notice the very cumbersome curve behavior of my little ones. some good tips for the best/safe cornering possible? Especially in tighter turns. I am not a heater and ride very carefully due to a fall with 80 things during the driving hours. Before now everyone writes again “1700ccm is nothing for beginners…blabla” – I know that now … but that doesn’t help me any more. I would be very grateful for serious tips & advice. Thank you in advance! 😉