Today I decided to sort out the new set of tyres for the 990 that I started looking at last year, so phoned the garage who'd quoted me £230. It didn't go well.
There's a real shortage of 150/70x18 rubber it seems - Michelin don't know when they'll have Anakee Adventures again, and I didn't find a reliable source for them. I can find fronts no problem though, so I'm having to decide between replacing the front only (it's the one with the cut anyway) and wait for stock to re-appear, and going a different route. I've found that it's not just Michelin with supply issues, as a few places I've looked have either front or rear in a tyre, but not both.
I did find Pirelli Scorpion Trail 2s though, and they were on my list of options, so I'll phone again & get a fitted price for those. I'm happy enough with how the current mk1 Scorpions have been so I'm not upset if that where I have to go. The cut shouldn't be an MOT issue as it's not down to cords, but the tyres are 7 years old & the rear is becoming a bit square, so they could do with being changed.
On a plus, I received the new tubes I'd ordered to go with whichever tyres I buy, and the front Wemoto sent is the ultra-reinforced version, rather than just the heavy duty I'd ordered - the ultra part is that the tube is 4.5mm thick while the rear one is only 3mm. I think the tubes I put in the TS are maybe 2mm thick at he most. Maybe it will help keep the front tyre closer to the ground...