The headgear for the men and woman's are not the same size.I have received the ladies, 18 1/2" and 19 1/2" long. The men's, 21 1/2" and 22 1/2". I receive the men's from the Veteran's Administration in a complete P 10 mask package.The ladies I buy just the headgear from a local DME. Does the VA off...