I picked up a Schwinn Paramountain mountian bike and need info about it. Its a made of Tange Prestige and is lugged with tange rigid forks. All XT M730 componets with rear XT U-brake, 6 speed XT thumbshifters. Has Ned Overand signature sticker on chainstay. Decal on top tube says Paramountain with world championship stripes on either side. Front forks have XT U-brake instead of cantilevers ! Only number I could find on frame was a #2 under bottom bracket. Frame is a light yellow color. I read somewhere that these Paramountain bikes were made at the Paramount factory and were silver brazed. Is that what is used for lugged frames? Any info would be appreciated