I might Matt. My car has a clean exhaust with only the usual brief puff of white smoke in cold damp weather. I think the rubber may not be sealing due to age. The engine has got back most of the smoothness since I re-aligned the exhaust. I also with be cleaning my old disks, because they are 'warped', as is the replacements. On this forum, it has been said that the disks are not actually warped, but are contaminated. I will try and removed this contamination and see if the warp feel disappears. Back on the oil consumption, I will be going to the NEC next Sunday so will see where the oil is blowing and I will see if I need to replace any other seals.