I have an "original-style" Mares Xvision which is probably 15 years old. Love the mask, but it is long in the tooth and the clear silicone body has yellowed significantly. I have diopters lenses which are still good for me and could buy a NOS Xvision. Might I also upgrade to newer liquid skin version and use the old diopters? Have the lense sizes/shapes changed over the years? Thanks.