Found this with a bit of searching but do not consider it definitive.
What is your model number on your 46"?
Model number M00595X was year made 83 - 84.
Model number M00596X was year made 85 - 91.
This might help: http://www.weekendfr...html?1127356423
I cannot get to the 314 deck right now to see what the model number is.
Found this too:
Andrew - There are several to choose from. All of which are no longer available as new complete decks. They are:
38" with model numbers M00663X, M00664X, M00665X, and M0038DF.
46" with model numbers M00595X or M00596X.
50" with model numbers M01011X or M01013X.