Dan,

I have posted 5 pictures he

https://www.flickr.com/photos/15627832@N05/?

The pictures show how the release cable is routed in our Pawnees for a TOST release. If you are using a Schweizer release then this won't work because you need a lot more leverage than you do for the Tost.

Basically, the cable follows the left rudder cable up to the cockpit from the release, goes to a pulley on the floor and then goes vertically upwards to the bottom of the instrument panel.

We have a golf ball (with a hole drilled through) through which the cable passes to act as a grab. You can either pull the cable aft, or push it forward to activate the Tost release.

Hopefully, this is helpful.