It can be an ongoing problem, it was for most of the time for me until I made sure to spend time with the soundman to make sure he gets the sax in the monitors. Best case senerio is when the place has everyone on stage on their own mix but unless you’re doing theatre’s this can be rare. If you’re going to be doing gigs ocassionally enough with this setup you could get your own personal monitor box, that’s really the only way sometimes to have full control.