The rear triangle of my '98 19" HomeGrown FS URT has broken at the weld of the shock tube to bottom bracket. Does anyone have a line on repariing or replacing the URT? Does the dimensions of the URT change with the frame sizes? Another words, can I use a rear triangle from another size other than the 19" I currently have? Love this bike as it has become a cult classic and I would like to build it into a SS head turner!