Hi, I have a 7' Diamond pro am bought new by me and delivered and installed by Diamond themselves . I posted a few months ago aking for help and got a few responces, I tried them all and still have those Damn black marks on the balls after every game and I can't seem to get rid of them, The table is less than 2 yrs old. Myself and my Gf are the only ones who play on it. I've tried the shoe polish trick to no avail. Does any one else have any Ideas, I hav emailed Diamond a couple of times and have not heard back from them yet. Thanks in Advance, TODD