Someone gave me a Ralph Lauren Polo shearling that is pretty similar to a b-3 though not so perfect as to be a repro. But very close. there are two problems - it is a drop large and, because he was a bit of a meathead, he had the sleeve lining/shearling taken out to make room for his "guns". So there is still the shearling on the cuff, but the inside of the sleeves is just bare leather. I can get the body taken in. Any advice on the sleeves? Should I try to replace the shearling? Should I just put in a quilted lining?Is this a waste of time? The jacket seems pretty nice from what I can tell and is mostly unworn though about 20 years old.