Hello Hope someone can help. I have decided to attack my ty twinshock middle box to repack it as I have already done with my pinky. But unlike the pinky the twin shock has what appear to be three empty seperate chambers behind a mesh and just a thin slice of packing sandwiched between the mesh and the outer skin of the pipe ( the part the heat shield bolts too ) Does anyone know if these chambers should be packed with fibreglass material or left empty, I can see no remains of packing unless it has all disintergrated and blown out. I intend to replace the very fine mesh baffle to the rear of the pipe as a mod I believe Mick Andrews said he does in one of his articles. Im also repacking the rear silencer as a matter of course but dont want to choke the motor if it was designed to have all these empty chambers hope some one can help Many Thanks John.

Not a 100% sure but its probably the same as the TY175 and just a perforated plate with no packing, the packing should be in the tail section.