Anybody know the intricacies of putting, lets say, Yale Cover over 5/16 D2 Racing or 5/16 NE Endura Braid?

Would I use 5/16 Yale Cover? Will it stretch enough to cover a 5/16” line or do I need to upsize to 3/8”?

Is it as simple as putting the D2 thru the Yale Cover and then treating the D2 as stripped core at both ends? At the traveler end of the line would a back splice work?