I found that they mount easier on rims that are 18mm or less. I put one on my hybrid rim 19mm the other day, it was a pain to get on and now have a pinch nerve in my hand. When I mounted it on my spare road wheel, 17mm, it went on with no issues and very quick.
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Brian | 2023 Trek Domane SLR 7 AXS | 2023 Trek CheckPoint SL 7 AXS | 2016 Trek Emonda ALR | 2022 Trek FX Sport 5
you should learn to embrace change, and mock it's failings every step of the way.