Sorry I forgot to mention I have also replaced both front tires. Bought different types online for about $15 each and anti scalp wheels also for $6.50 each online .
Just a suggestion, maybe order a spring online (if available) from Ariens or Gravely. Good luck, my Gravely is 11 years old and no problems with springs at all. Only replaced pump drive belt after 10 years.
I have a Gravely ZT HD60” zero turn with the FR730v Kawasaki engine. It has 1300 hours cutting on it . I’ve only replaced the starter solenoid and adjusted the valves once . Runs great,doesn’t use or leak any oil. I have serviced the pump drive fluid (recommended 20w50 “SL” oil Or Mobile 15w50...