My 156 2.0 sele is over due for timing belt change. Was changed about 40K ago,but has had new set of tensioners since then (at about 12K) due to whining noise. Same noise is again occuring and I notice a loss of power. I have ordered new belt set, and need to get a set of camshaft locks but wondered if anyone else has seen similar issues with the tensioners causing loss of power!