I unintentionally left the RT warm up in the Okanagan sunshine while the grill was shaded in the trunk. I inserted the bottom first and then the top corner. Then using a small plastic trim remover tool popped in the last leftmost corner. It’s not right, but nor is the grill on the left. So far it’s stayed on at highway speeds.Popping them back on - I would put just a small DAB of liquid soap on the Tabs to assist …. after it dries it might actually help hold it on ….. I changed my speakers ( all four ) to JBL 2 ohm models ( fantastic sound & in-expensive too ) as I recall I got the front speakers out using a screw driver that had a spring extension ( it's much smaller than even a 1/4 " swivel ) that allowed it to bend a bit ….. got all four out with just removing the grills.
What JBL models did you use? What’s the popular Polk speaker?
I seem to ONLY have front speakers.