Joined: Feb 2012
Posts: 19,352
Likes: 5,469
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Do not heat the frame, if you try to unkink it do it cold. The heat gun won't get the metal hot enough to cause any phase changes, not that you want to have that happen anyway. Can you post a shot or two? The beauty of 4130 is it's resiliency and toughness. If the frame's alignment is not damaged it might be best to leave things as is. Andy.