Sounds like you're in a rut. Listen to something different and figure out what the rhythm is doing to form the foundation for the rest of it. Gypsy jazz - Django Reinhardt, The Hot Club of France, Stephane Grappelli and so forth - will be heavily rhythm dependent. Hot bluegrass is the same. Look for Mark O'Connor, Tony Rice or Steve Kaufman. If you want to cross pollinate the styles, do a search on David Grisman. These are all blistering lead players, but each of them will rely on rock solid rhythm to make it work. Grisman in particular is a rhythm genius.
The other thing is to get and use a metronome during practice. What I was sure had to be my own style of brilliance in my rhythm playing turned out to be a pretty poor treatment of the beat. A metronome is cruel, but you'll end up being a better player for it.