Nice. I recently went tubeless as well, fitting Mavic Yksion TL tires on an Ultegra 6800 wheelset. Replaced the valves with removable core ones I bought at REI, and used regular Orange Seal. The tires went in fairly easy, and seated with a floor pump. I’m running 85psi on the back and 80lbs on the front. Like you, I have been pleasantly surprised with the improvement in ride comfort and decreased rolling resistance. In the last couple of weeks I’ve completed a 50mile ride and a century with these wheels/tires and I’m really enjoying the new setup.