I Can't Remove My Shower Handle. I Found The Screw And Was Able To Remove It But The Handle Simply Will Not Come Off. I Have Tried Both Handles In The Shower With No Luck. Any Suggestions?

They make handle pullers that are similar to gear pullers for doing this as handles do get corroded on and need some help coming off. Theyre relatively inexpensive at the hardware stores so you might want to invest in one instead of breaking the handles off and screwing up the water stem underneath