weather-strip adhesive solutions for tonneau cover?

I have a Pro X15 tonneau and and have been getting some water infiltration in the typical spots: front corners and in the rear around the tailgate. I'd like to get those areas sealed off better. the tailgate area should be pretty easy since it's just a bare painted surface where I need to attach the weather stripping. Does anyone have any suggestions for the best way to get weatherstrip to adhere to bedliner? Its rolled Herculiner that I applied in March 2021. I've seen mixed results about trying to prep for adhesive and know that using 3M tape will provide the best results. I just want to know if someone has found a solution that actually works and lasts and stays attached. It's a northern Minny truck so will be exposed to temps from -40s to to mid 100s F.

Thanks in advance!

 

Scuff Herculiner with sandpaper. I use a sanding sponge. Clean/wipe scuffed areas with rubbing alcohol. Use 3M Adhesive Promoter on scuffed areas and allow to dry. Then apply Weatherstripping.

DO NOT APPLY ADHESION PROMOTER TO PAINTED AREAS!

 

appreciate the tip