The springs on the Reflex kites will change the norm for you a bit. Going back and forth between them will give your skills the muscle memory to fly both AND allow you to select what configuration works best for you. Learning to adjust yourself to the needs of the kite is also part of the equation as you have already found out. Personally I think you are on the right path to become an amazing quad line flier. A couple of pieces of wisdom to go forward..
1. It's never the kite's fault. You've purchased quality products from different sources and you've invested in the proper gear to make them work. From here out, it's YOU.. The kite is doing exactly what you are telling it to do. You just have to learn to tell the kite what you want using the four lines provided.
2. Take care of your gear. It's not a small investment for most people. Know the wind ranges of your kites and try to stay below that upper range as much as you possible can. Once a sail gets stretched, it is stretched. That's a one way trip.
3. Practice and fly with intent. I'm stepping on @John Barresi's line here a bit but the wisdom is very valid. Practice what you want the kite to do and it's an investment into your flying skills. Learn something every time you fly.
4. The latest gadget will not make you a better flier. Only practice will do that. There is no substitute for time on the handles. Skill only comes with practice. The latest gadget or gimmick might make the translation from your hands to the kite a bit better BUT, the kite is still only going to do what you make it do.
5. Find friend to fly with if you can. One on One learning, AND teaching, is the best way to learn and also give back to the sport. Minimize risks to yourself and the public. Fly safely and skillfully. Mind your surroundings and know both your limits and your boundaries.
6. Don't forget to breathe. Enjoy your flying to the max. Making it all work will take the fun out of it.. Give yourself a few minutes each time you fly to just fly and let the kite teach you something. Believe it or not. the kite is also a pretty good teacher if you let it be.