On decel my 600 rr burns blue smoke. It is constant down hills sometimes on flat road to. Honda service manager said this is normal for this engine because of such thin pistons. It was a little bit over full when they changed the oil after rebuilding the engine, so i brought the level down to just under the full line. It doesn't do it on flat parts anymore as bad but on downhill engine braking and down shifting blue smoke comes out pretty good. Honda told me it can't be fixed and that there is nothing wrong. Any comments.