I had to remove my 57mm Termi system from my 749 today as there is a crack in the rear cylinder pipe at the heat shield bracket. It was an absolute bastard of a job getting the pipes apart as they were completely stuck together. When I put it back together after it is mended, what are the recommendations regarding using grease or similar to assist reassembly? Last time I did it I found it quite tricky to twist n' turn each individual pipe to align it correctly - it's obviously quite important to install it so there are no residual stresses in the system otherwise it may crack ! If the joints are dry this is pretty tricky. Any thoughts? R x