anybody tried setting up tubeless gravel tires on Enve rims?

I just purchased a Santa Cruz Stigmata or 'Stiggy' with the Enve M50 rims.  I set it up with Specialized Trigger Pro 38mm tires and they went on easy but overnight have gone flat.  I've given it some time, added more sealant, gone on a few rides and they keep doing that.  Does anyone have recommendations for a good tubeless tire choice with these rims?

Thanks guys.  

You got a leak somewhere. Fill them up and do a water dip test and look for bubbles.

Don't know what tape you're using, but try another layer

I have M50's with 38 Triggers (and 33 triggers before that).  They seal perfectly.  If the rims are clean and the tires new, then you almost definitely have a leak past the tape somewhere or the valve.  Best to do the water leak test as suggested.

Thanks for the help all.  TurboTom, what tape and sealant are you using?

I'm not sure about the tape because it was on the rims when I got them (it is black).  I intend to leave it as long as it continues to hold air. The sealant is Orange Seal.