Guide Tensioner 11

First off, Cam Chain Tensioner was replaced a month ago, oil pressure is fine (trying Amsoil oil next), valves were just checked by trusted mechanic. Not one was out of spec. Then the chain and guides were checked. Everything turned out ok.

But it still ticks. Can't figure out what it is. Doesn't really affect performance for all I know because it's a street rider. Not raced.

Here is a video of it idling and me reving it a lil' bit. Redlines at 15,500 and I took it up to 11,000. Any one with info? Ticks at beginning and from what I can hear, I believe it's coming from where the headers connect. Let me know what you think

http://s528.photobucket.com/albums/dd326/blk600cc/?action=view&current=HPIM0442.flv