On a similar note... my 1.8K (VVC derived) seems unable to get the belt tight, the tensioner is at full swing but the belt is still loose. I have confirmed over several different manufacturers/part numbers that they are all the same (Gates 5416XS 143x26, Conti CT929 143x25, Gates LHN100830 143x25) I've just ordered a Gates 5238XS 143x23 to see if that's any different. It used to be about mid range on the tensioner adjustment range a long time ago, but with various belt, tensioner and water pump changes it seems to always be slack even at max tensioner adjustment. Have manufacturing tolerances changed over the years? Has the tensioner pulley diameter got smaller? I've had a head skim but surely that wouldn't have dropped it that much. It's almost as if I need to drop a couple of teeth on the belt to bring it back into range of the tensioner adjustment range.