Can't remember which way these go

[ossodiseppia]

I'm trying to remember how to route the demist tubes from the blower motor on my 1750 Roundtail. The tubes are very fragile as they are made of paper. Any amount of force will surely cause them to split. I don't want to experiment too much as they will tear. There are two long ones and two short ones. The short ones are easy, it's the long ones that I can't figure out. There are holes on eaither side that I think they need to go through but, the fresh air vent tube is a little in the way.

[GTD]

Osso,
Your Baby is so uncluttered it's hard to tell your looking at the same plumbing!

RHS
I have seen these routed three different ways:
Movable elbow points upward, tube runs upward, turns 90 degrees to the right then, 1) slips between firewall and flat metal support bracket (not thru hole)w/3" round hole on firewall for approx. 4", turns 90 degrees toward rear, then turns 90 degrees to vertical and attaches to demist vent.
2) travels UNDER flat metal support bracket then up thru 3" round hole, turns to rear, then vertical and connects to vent.
3) elbow points 45 degrees toward the rear from vertical, tube runs upward and turns right, travels closer to face of dash and turns vertical to connect to demist vent.
Routes 2 and 3 are not my favourites as they require tie-raps or fasteners and are subject to damage from passengers.

LHS
Upward from elbow, left and over steering column, UNDER speedo and tach drive cables, thru the steering support, OVER grey valance drain tube, 90 degrees toward rear, 90 degrees to vertical and onto demist vent.

I'll send pic's in a PM.

[GTD]

Osso, Just in case anyone else needs them, here are a few pics: