Hi emery.I use red liner sensi -tac tape ,designed for 1 -4 day hold, and I have no problems in relation to it not sticking to the poly. I am not sure what is `going on`in your case as most things will stick to poly easier than to lace. Try a different tape if you have one to hand --if not, order a different tape and in the meantime just put your system into position on your head, then fold up the perimeter at the back and use some glue. Allow the glue to go clear, and press the poly onto it and do the same at a few other points along the perimeter --- you don`t really need a full-perimeter bond, unless you actually want to --- a few spots here and there will give you a good hold ---- My guess is it`s the tape which is at fault -- poly is poly, basically an artificial `skin`, so it has to be to do with the strength of the adhesive on the tape --well that`s my guess anyway --keep us posted, Cheers, Paul.