Shout out to Scott,
@VGOODIEZ.
Thanks, bud!
My new Splinter V1+ has what I'll call a manufacturing imperfection, in that the stems (including others beside the ones in package) will not seat in the glass properly; the fit is just all loose and it seems like (with a basket screen in place) the stem may be bottoming out on the screen. With no screen (rimmed) the glass will just barely grab a little.
Scott is sending a new one right out and including a return label to use when it arrives. Solid! I won't skip a beat and can stop worrying about leakage or the stem falling out! I love these things...
Having not heard anyone here speak of an issue like this, I've gotta think it's a one-off problem.