Klipsch P39F Question

I would like to know if anyone knows how to remove the trim rings around the 9" woofers in Klipsch P39's?

I don't want to mess them up, I need to replace two toasted tweeters

Several Vintage Sansui's, AU&TU9500 AU&TU717 AUX1, fons Mark I international w/Rega RB1000/Sumiko Blackbird (sweet sounding), Weiss DAC2 / Mac Pro Cornwall III's / P39F's.