well finally got around to this project . it was a motorized ratfink bike but due to vibrations it cracked in half . the top tube broke in to and the cracks at the bottom of the seat post cracked in half so i threw it on the side of the house for about a year . so finally took it to a welder and cut out the top tube and replaced it with chromoly pipe and welded on a motor mount pipe to stop the vibration and welded up the extra cracks and pretty much welded were i thought it might crack in the future. took it apart and sent it to the powdercoater a nice blue and put back in the engine and what a ride it is . so far all stable no cracks and riding sweet! larry ca