It sounds like you're getting to the point where upgrading in one place starts exposing limitations of gear in other places, and the constant cycle of escalation becomes quite costly to solve.
I have the exact same Carbon 190go! tripod as you, but as soon as I started shooting telephoto more often I went bigger and stiffer. I still use the 190go! as a secondary tripod for home/studio work and lightweight travel.
Can i offer a few more suggestions (that you may have already tried)?
1) If you can get away with it, try the same setup without the lens hood attached. It catches a lot of wind, creates a lot more turbulent airflow, and applies extra torque on your setup since it's so far away from the fixed point of rotation.
2) Dropping your tripod lower can help. If you're reeling in leg sections, start by retracting the skinniest, lowest legs first.
3) If you can go close to the ground, angling those legs further than the first notch can help too.
4) Look for setup opportunities to shield yourself from the wind. Trees/walls/whatever you can find.
5) You can use your body as a wind screen. Position yourself as close as you can to your camera/lens blocking the wind, and use a remote cable to trigger the shutter.
I'll probably think of more right after clicking "reply", and I bet there's a pile of other ways that our friends here can think of.
BTW - as one last aside, when considering tripods I really recommend reading through
The Center Column – Independent Tripod Testing. Even if some of the metrics fly over most of our heads, it can give you a real sense for how to quantify differences between tons of frequently-used tripods. Their governing Rankings table presents a ton of useful info.
Rankings – The Center Column