I'm not Ken, but here is my .02.
I weighed the stock valve verses my new metal T-valve and Sensor. The new valve and sensor weighed precisely 1oz more than the stock valve. I believe that is enough that a compensating weight should be added.
I was lucky and had a 1oz weight right at the valve of one wheel. So, I took that off and put it 180 from the valve on the other wheel.