I'm new to tubular wheels and tyres, just had some new wheels built, done lots of reading on the subject. I've just put my Vredestein Fortezza Pro Tricomp tubular tyres on the rims 'stretch' (700c).

They slipped on so easily I'm not convinced there's much stretching actually happening. I was under the impression it would require some effort to get them on the rim the first time. I've put 100psi of air in them which keeps them in place, but I'm concerned... shouldn't it be harder than that? When there's about 20psi in the tyres I can still pull them clear of the rim bed. I've also tried putting the same tyres on a clincher rim - they slip over the lip just as easily. Does this sound OK or might something be up here?

Looking forward to doing some gluing over the weekend, just wanna make sure these tyres are OK.