I changed mine because the stock one just felt to tight and the Hayden unit seemed to give a sort of cushion effect as well as smoother shifting on my bike that is. I am keeping an eye on it just in case it starts to wear prematurely. I was perfectly fine with the old manual adjusting one and really miss the inspection/adjusting door the MOCO did away with so instead of a five dollar gasket you get to buy the $35. outer primary gasket. I know some re-use the old one but if you ever had one leak you prolly wouldn't want to clean the mess. Don't ask me how I know.
specially when it coats your rear tire.
'Some swear by 'em, 'some swear at 'em, I don't know?? I run the OE adjuster on my HDs, never any direct / related issues... Whenever checked cold, always within specs... The original shoes have plenty of life left at 38k, 59k, and 47k miles...
I'm with you on the old stuff
Thanks for the heads up about re-using the gasket, I was just contemplating re-using one