A/C duct diagram

Does anyone know with 100% certainty, if the duct system on a 3950 runs in a straight line from the living room directly back to the garage area. I am looking at installing a duct in the loft area due to heat buildup. I should be able to locate the duct to drill the hole as long as it does not shift going back to the garage

Take off the last ceiling vent... using a flashlight and a mirror... and see first hand if it goes straight back... take a measuring tape... by running the tape back... you'll know how far it goes.

blackfin,

I am here at the plant today and walked the line with Greg Dischler, the Brand Manager. We verified that the ducting in roof trusses do go straight back. You should be able to cut a hole, flash around it and add the vent. We are looking at possibly adding a duct in the loft going forward. Greg will be discussing it with Engineering and Production tomorrow. Thanks,

Jim