my buddie has a mostly stock shee, 28 mm carbs and k/n filter kit and t-5s We were in northern WI riding and the right pipi started to fall apart about 8 in from the motor right along the seam it was paper thin for about a foot and 1 in wide, was not running lean, we welded a patch over it and rode another day and no other problems, the pipes were in perfect shape what caused it? and does any one have some used T-5s for sale? Thanks guys