Vicuh, having handled perhaps some 100 or more original a-2s, i can assure you that some have had slighty different colored panels. this is especially true of 1942 contract aeros. i have seen different colored panels on cable, and rw goaties as well. not only different colored panels, but different colored thread used on the same jacket. the different colored panels that i speak of are not because of age, wear and tear, or sun bleaching, it just the way some were made. original a-2 wrist knits were 2 1/2"-3" in length. the wrist knits that we now see on originals are usually shrunken by 1/2"-1".
Is there any evidence to suggest that any wartime originals were made from veg tanned hides?
Some pre-war jackets and some earliest ones possibly were veg-tanned.Is there any evidence to suggest that any wartime originals were made from veg tanned hides?
Nothing to be done about those knits other than replacing one day. One thing you might try though if you’ve the heart is to get the knits wet with warm to hot water and then lay it out and let dry. The drying will tighten them up a little through some shrinking. But it’s only a temporary fix. They will eventually continue to bubble up and look ridiculous.
Don't wash ELC knits, it only stretches them totally out of shape
Ken? are your knits made in USA or made in UK?