Originally Posted by scapegoat
Crank run out is the problem with gear drive. Word is 09 up hyd tensioners are the way to go.
06 on the Dyna's 07 on all the twin cams.
If you warmed the bike up, never got on it hard until completely warmed up and did not lug the engine (the engineers want you to cruise at 2900 to 3100 rpm's) then the old tensioners would last 80k plus miles.
The ones that ran into problems were the throttle blippers and those that thought they should be cruising down the highway at 2200 RPM's. They were having issues at around 25k miles.