Never tried doing myself, have a friend with a machine so hoping to avoid an extra £100 at KwikThick.
You fit tyres yourself?
I have done a few, trailer, ride on mower etc. Used the explosion trick with brake cleaner, wife wasn't impressed as tyre landed on son when it came back down from the barn roof

2009 MK7 Crew Bus, soon to be a 'camper' hopefully, so I can keep up with tosspots on bicycles