I don’t understand your adversion to VHB. It’s not hard to remove, a piano wire slipped between the panel and the RTT will cut right through the vhb and not harm either piece. Also, WD-40 does a great job breaking down the adhesives to easy clean up/removal. I’d use VHB on the boarder with it right up to the edge and a couple long strips down the middle. Removal and clean up would likely take 30 min if really taking time and making sure not to scratch anything.