Sorry for the delay but there is Hope.  A fellow in your group does stuff like this and has taken a CD for doing the final steps.  Hope to put something out there.  Once there is a reasonable video of the Conn River Line...I'll start working on a tour of the St J and LV. 

The St J is currently truncated just west of Morrisville.  I have not yet solved the electrical intricacies of putting a turnout in to one of the mainlines that run through the relevant section....which would allow access to a plausible west end. 

The St J departs St Johnsbury when the ball signal comes clear for crossing the diamond.  Early in the 20th century the diamond was the crossing of the mainline of the Conn River line to head west.  Looping up the hillside through Waldon, Danville, Greensboro Bend, and Hardwick to reach Morrisville.  When prosperous, trains would meet and swap crews so everyone sleep at home/saved money.  With a viable west end that crew swap would be available.