timing chain tensioner

[Skidmarx]

just a quick queery, as i was rounding up a zx14r i started to notice what sounds like a timing chain rattle, bike has just clocked over 22'000k's and was serviced 4000k's ago, but after reading around on the net most cct problems happen when bike is cold, mine is more noticeable while hot, and starts to rattle around 3500rpm, i do ride it hard, and it does see rev limiter on the odd occasion most trips, im investigating acquiring a manual tensioner as we speak and will be doing another oil change before the next ride, just starting to get a bit scared lol

any help greatly appreciated :) ash