Hi all, I treated the bike to a new set of boots to replace the original Z8's (sorry @andygriff) and they are running a promo where you get a £40 pre-paid card upon sending in a copy of your invoice.
Go to promo.metzeler.com/tyres/en-GB/Metzeler2021promotion/overview for details.
New boots seem to have much less rolling resistance and to be easier to turn, am looking forward to taking the new tyre sheen off them and seeing if they live up to the MCN hype...