Thanks for the tips guys.
I had the undertray off when i changed the oil and it seemed quite clean.
But i will try and get and have a look over the weekend and check those areas as suggested. Im friendly with our local toyota dealer aswel.
I dont ever pay tohave anything done on my cars as i can do most like cambelts, drivetrain, clutches etc myself and have a few friends who worked and still work for toyota if i get stuck.
Its just so handy to have an owners club to get good info on those common problems.