Axis Elite wheels - rim tape needed for tubeless?
I have specialized Axis Elite wheels on my 2018 Diverge. When converting to tubeless (using Specialized Trigger Pro 2Bliss tires) I noticed what looked like pretty robust tape already in the rim; indeed, Stan's tape won't stick to it.
So I converted without adding tape. Initially the results were OK, but one week in the tires won't hold pressure at all (flat overnight; immediately noticeable pressure drop from even 35 psi). Using Stan's sealant & valves. The bead seems to be well seated.
Did I make a mistake by not using additional tape? If so, any suggestions on tape that will stick to the tape that is already present in the wheel?
TIA.