No experience with those specific tires, but as a general rule, here are a few things to check :
-is the rim worn in any way (dented or very worn in case of a rim brake model)
is the inside clean (no debris on the rim bed, no old sealant, etc.)
is the rim tape ok? (no wrinkles, well centered)
try seat them with soapy water, "massage" them in place (it helps to identify which part doesn't sit right), then pump to max recommanded pressure.
No experience with those specific tires, but as a general rule, here are a few things to check :
-is the rim worn in any way (dented or very worn in case of a rim brake model)