Guys: My mom has a Hustler Super Mini Z 52" that is approximately 8 years old, 565 hours on the meter, with a 24 HP Honda Engine. The engine has developed an intermittent problem described to me by mom and my brother-in-law as missing. They tell me the mower loses power as if it is running on one cylinder. Typically this problem will occur after running 1 to 3 hours. After it cools off it operates fine. I have run the heck out of the mower several times for 3 plus hours and have never experienced the "missing problem." I have taken it to a Hustler Dealer and to a Gravely Dealer and they have checked everything and cannot duplicate the problem (I believe them because I can't either). Recently I talked to another Hustler Dealer and he told me it sounds like a bad coil. He said Honda's in this vintage experienced the problem I described. The fix is new coils and a new diode harness. Both of the dealers I had work on the mower told me they could put new parts on the mower but hated to do so not knowing the new parts would resolve the problem. Intermittent problems are the worse especially since I can't experience the problem (unfortunately, mom does & I live 135 miles away). If I could experience the described problem I would remove a plug wire to determine which side is causing the problem. This would definitely support the coil, dioide harness replacement. Advice and/or comments would be appreciated.