Advice needed on narrowing down options

[adm]

Sigh, not turning out to be my year. Finally copped a dose of Covid which, once the migraine finally went, left me unable to read a screen properly for several days.

I'd hope not to have to swap the dish given that it's another item on the shopping list plus the whole day it'd probably take me to get it aligned properly but on the other hand I don't own a blowtorch...

Are there not any adapters I would be able to use? I see there are a lot of mk4 to mk3 adapters for, if I'm reading things correctly, newer Sky LNBs to be put on the older dishes but I believe from what I've read that these are 37mm, not 40mm collar. I can't seem to find anything to put a 40mm collar on the Mk3 dish, or at least not in the first couple of pages of Google results I'm g etting, unless I'm not understanding what I'm seeing (highly likely)

They are rare these days
Maybe

https://www.ebay.co.uk/itm/154555259603?hash=item23fc361ad3:g:KLMAAOSwFq9hCRWi