Durk,
There is nothing better than old solid glass. I lived in an apartment in college in a building last renovated in the 1930s. Glass, stained and all, was great to look at; the cold drafts in winter due to the drying of the 60 year old glazing around the windows was a different story. I am sure the lead paint wasn't good for me either. I love the ingenuity with the tool.
Turkeyman,
Good luck with the install. Since I have yet to change my TB, I don't have any direct input, but I would change the tensioner out. Just my 2 cents. Durk may have a better reason(s) for why he chose to change out the tensioner.