I know I'm not going to be of much help but you are not alone! Pete has done some major chewing damage! For the first time ever my husband and I decided to take the plunge and buy a beautiful bedroom suite. It cost $4000 and we will be paying for it the rest of our lives!! We wanted something that we would have until we die and maybe even pass on to family. I was so careful when I picked it out. It is old looking and has worm holes and is sort of aged looking. I thought that if it got cat scratches I could fill it in with stain and no one would ever know. We had it delivered about 2 weeks before we managed to get the kittens inside. In less than a week Pete ate the top corners off of the footboard!!!! Very obvious and I can't fill it in with stain because it is GONE!!! He has chewed the bottom corners off of my cupboard doors, lots of teeth holes in BOTH my inherited silk lamp shades, teeth holes up and down both sides of our window shades, books and photo albums have teeth puncture holes!! He chewed everything that was within reach (which of course, means everything).!!!!
My only consolation to you is that he is a little over a year old now and has stopped doing that! He slowed down at about 10 months and I hope and pray that he is now forever done!!! I know it is frustrating but sometimes the only cure is age!
Good luck and hang on...he will grow up!!!