Just had my 2011 Road King serviced at 115000 miles and the Tech said he heard a slight ticking noise at a certain RPM and believes that it is the cam chain tensioner. I heard this was an issue with the 99-06 TC engines, but not on the 07 and later TC engines. I asked him what the contact material was on the tensioner and he didn't know. Any and all feedback would be greatly appreciated. Thanks in advance.