I would like some advice on restoring/caring for a pair of loveseats. I need help in identifying what type of leather I am working with and what product and techniques will work. I purchased the set off the showroom from a local store about 4 years ago and it was already showing signs of drying and minor cracking. I treated them with leather oil which darkened them slightly but still maintained the rich butterscotch color that I wanted. Body oil stains are evident in many of the pictures. Pics 8 & 9 show staining from battery acid from a picture frame light which leaked. Acid is from standard Duracell D cells. The leather has very little stretch to it and the only tags I found are shown in pic 15. Thanks