Caught this one late,
Good choice, don't fudge it all up by using tyres that'll compromise the seal. You must WITHOUT DOUBT ...
A) use ust tyres that go 'ping/thump/thudd' or what ever you like to use as a descriptive noun as the bead locates into the UST rim. I failed to do this on my virgin outing and I have a nice little dent in my front 819 as the tyre 'burped' off! Don't worry, read on....
B) Pure in Stan's, spin wheel (post inflation; I use a standard Track pump...never had a problem inflating so long as you hold the wheel off the ground as you blast the air in), turning onto it's side as it rotates.
C) Check the line (on tyre) that sits just above the rim all the way round to ensure even seating of the bead.
D) Deflate on ride to optimum pressure.
E) Go out and hammer them, I have LUST up front (very happy with it) and what I and others considered and a pants tyre on the rear...Conti MT King UST. Yet, keeping an eye on pressure b4 each ride as it does 'seep' air, it's been a great all round tyre that's performed very well over diff terrain. I'm sure GWT will support my claim of hammering rocky Peak trails without so much as 'whiff' of air from the rubber
F) Ensure, with your new found confidence, that you 'Unlock' your rear unit pre-down hill hammer as they can indeed be bent...my rims currently feature a front 'wobble' and a rear 'bob' respectively.
Hope this helps you, and saves you some time and heart ache
Forgive me repeating what's gone before...I feel 'cleansed' now