Felts for my valves

[BopEuph]

I am needing some new felts for my Willson 2900, and the local guy doesn't have any decent ones. I tend to use the fourth valve hard and it makes a lot of noise. I tool it to the local, and he didn't have any Willson felts, and one felt didn't do it, so we tried two. However, I'm not sure that's a good way to do it being that you need the proper thickness with felts. They never *really* worked anyway; the valve was back to loud clanking after about a week. Does Willson sell what I need, or maybe the TubaExchange? Or should I just go back and do what I did before?

Nick