I never had a problem with sticking.

I've always used flat-wound strings. I hate the trebly "rotosound" of round-wound strings. I always played my strings until they broke and then replaced them with used strings from the off-rental bin whenever possible. If I had to use new ones I rubbed cigarette ashes and butter into them to improve the sound. I also stuffed foam under the bridge cover to reduce sustain. I wanted to sound like a bass and not like low-pitched guitar. If you want to be a treble player, get a sax, guitar, violin, etc. My bass heroes were Carole Kaye, James Jamerson, Duck Dunn. etc.

The thing I like about the GT's polymer rubber strings is that I don't meed a flatpick. I can go up and down with my thumb as easily as with a pick and not have to worry about blisters.