First of all, much respect for you history and service, especially since you probably didn’t get much in your B-52 days – I’m guessing 'Nam if you went on to fly 707s.
As to turning off the wind, choose Custom weather and select any preset you want. In the little cloud and wind layer window, select the wind layer. You can set 0 wind if you want, but you can also leave a wind but just turn off the gusts. The trick to turning off the gust is to move the sliders all the way to the left (50% is the minimum), then save the setup as a custom preset. If you reload it, it will have 0 gusts.
One other thing. The sim is extremely sensitive to gusts so make sure that you always align the gust direction to the same as the prevailing wind. That will eliminate some of weird, jumpy behavior.
B