For longtime and new users alike, I’d like to share with you my findings after balancing my wind vane on the 1400. Prior to my ‘fix’ I had noticed really large compass swings on the wind direction. As a small boat sailor, I recognized this as a ‘tail heavy’ vane. So, I got to work and added weight to the bulb on the front of the vane to make the arrow point and feather to balance equally.
To do this was simple. I epoxied a little hex nut into the concave portion of the point leaving extra epoxy to permit sanding to get the perfect balance. I can say this with 100% confidence, my wind directions were improved dramatically and eliminated the majority of the errant data points.
YMMV, but for me it was a total success.