My turnouts were hand laid using Fast Tracks jigs and MTH .138 rail. The layout was completed prior to FV announcing their turnouts. I noticed above that proto:64 was selected for the wheel profile. Proto:64 (code 87) wheels may not work satisfactorily on your layout. The S scale wheel profile you want is called “code 110 scale.” The flange depth of these wheels is .030” and is the wheel that the FV turnouts are designed to operate. All those who are using FV turnouts who have posted on various sites state they use the High Rail version and shim the guide rails if they want to operate any equipment with high rail wheels in addition to scale wheels.
If you plan to cut down a high rail wheel in a lathe it is not as simple as just lopping off the high point. The entire flange must be reprofiled to work on the scale turnouts. The drivers have a different profile so those might be easier to cut down but are a real pain to get off the engine.
Here is a closeup of the frog area of my turnouts. The gap between the rail and the guide is 3/32” and both scale and high rail wheels work flawlessly. The two insulators on the frog and the two on the wing rails are visible. These allow the frogs to be powered.
