[A/S] front sofa help!

[MISSARPAUL@xxxxxxx]

I purchased a 1978 Tradewind trailer last fall and was given parts  from the 
front sofa that the PO had removed. I have a 1978 Sovereign and have  
recovered the front and side sofas. 
The parts are like putting together a jig saw puzzle! They are not  from a 
1978 trailer! I have talked to the factory and they have sent prints of  1977 & 
1979 sofas which are similar to the 1978 in my sovereign. 
I need to determine what year trailer this sofa came from and get a  parts 
sheet!
 
The front base has the tambours with pan for the plastic storage  tray, the 
rear is a aluminum bracket that goes across the front and has two  brackets 
that attach to front wall and wood supports to floor, their are four  curved 
aluminum brackets with an aluminum angle piece going across these four  angles 
that support U channels connected to front of base and the angle iron in  rear. 
In these U channels are pieces of tubing that the plywood is fastened too  and 
it appears the plywood was hinged together and back of sofa attached to and  
slid forward and down when front of sofa was pulled out.
I have two brackets 10.5" long with hinges at each end that look  like they 
go from rear bracket to rear vertical support. However one bracket has  a heavy 
aluminum piece that looks like it would go to wall. No holes on wall for  
this bracket. 
I recall someone writing recently about their front sofa that had  the side 
to front on an angle towards the center. It appears that this sofa will  not 
allow the rear of sofa to lie flat. The plywood is mounted to four brackets  
which slide in the U channels. 
Can any one point me to the year of this style sofa? Anyone have a  manual 
which shows how the brackets are placed?
Thanks 
 
Paul
Troy, MI 
1978 Sovereign
1978 Trade wind