Pry & scrape gently, use something thin like putty knife to get as close and clean of a separation as possible. Don't focus efforts on one area, as it starts to come loose, move up/down to break it loose consistently because it's likely brittle and could crack/bend/break. Do you plan to replace the t-top bar, or have that one fixed? I bought a powdercoated replacement one, but can't remember the vendor for the life of me. My original one just wasn't going back on without being totally refinished, and I can't say for sure that the metal had enough left in it to handle that.