When I bought my Diamond Professional 9 foot table from Diamond Billiards in 1995, it was delivered from the Allen Hopkins trade show in PA where it was set up for a couple of days. The installer (Tony's Hustlers, Inc.) delivered it to Holden, MA and set it up with a machinist's level from parts in 1 1/2 hours. He said to lightly spray water on it every 30 days and then clean it with a damp sponge and then to cover it with a heavy cover to prevent UV (sunlight) rays from damaging it. He said it will remain tight and dark. It worked for over 6 years until I changed the cloth out when I needed new rails. The only addition to the above is I bought a Simonis table cleaner recently and use it prior to the spraying every 30 days. I use no brush or vacuum since he told me not to. He told me he set up Diamond tables all over the country, primarily for Pro Tour events.