Had the hard top on for a while on my 1984 380SL, and when I put the canvass top up, I noticed a couple of rips. One is pretty large between the rear window and the side window. It's straight up and down and it's about 6 inches in length, not on the seam. Does anybody know if these can be repaired and how? or; Do I need to replace the canvass top? If I need to replace it, just wondering if anybody knows where to shop for one. Thanks.