I recently purchased a used Super Z. Service was done to the machine by the dealer on May 4, 2004. The machine is 2 years old (but 2001) and only has about 50 hours on it (according to the meter). Today I got under the deck to sharpen the blades and decided to grease the spindles. Wow....took over 1/2 of a tube of grease for the three spindles. Is this normal? How often should I grease the spindles? I only used the machine to cut about 3 acres once a week....so put on less than 2 hours a week. Thanks.