22jeffers,
Have to ask if the rims are actually tubeless capable. No beadseat, welcome to “Drama 101”! Like rims from 20 years ago, there was no retention slot or groove at the edges of a rim to capture the bead of a tire. Mavic pioneered tubeless years ago and the rims had that beadseat that would hold the beads tight and make tire removal a tourett’s moment. It was referred to as “UST” or uniform standard for tubeless.
Tape is secondary to a properly designed modern rim. This needs to be attentivly done, of course however, with a mediocre job, a tire should seat up on a rim with a modern beadseat although, might not retain air for long.
A rim without a proper beadseat that will not retain the tire without air is plain unreliable and perhaps dangerous.
My plussers have Rocket Ron 3.0’s and Nobby Nic Performance 3.0’s on i45 rims that air up with an old Blackburn pump.