What kind of rim tape are you using? Switch to a thin/slippery "tubeless" rim tape if you haven't already.
I've come across combinations that were very difficult over the years. I avoid those. Tubeless is not a "solution" for a tire/rim combination so difficult that even your mechanic complains (but it's also possible your mechanic is no good.) Get different tires if you have to. I never carry tire levers, because I can remove all my tires by hand.