Parasound 2125 power button help

Contacted Parasound for a new round button for the power switch. They graciously sent me a new one for free. When I removed the old one ( plastic round button actuating a switch on a pc board touching it). Plastic old one looked like it was glued to metal inside face of case. Anyone par chance have any experience replacing this switch? Thanks. D
MIT Magnum MH-750, Monster HTS 5100MKII, Sony 77" Class - A80CJ Series - 4K UHD OLED,PS4, Def Tech 15” sub,LSIM 706c, Sunfire Signature Grand 425 x 4,Parasound hca 120, LSiM 702 x 4, Oppo 103D, SDA SRS 1.2, Pioneer Elite SC63 , Pioneer Elite BDP-05 “Why did you get married if you wanted big speakers?”