Noticed that the head tube on my Free spirit is much shorter than the steerer tube on the Revival forks I want to use, 17"wheel & disc brakes baby!. The threads on the steerer tube don't even come down far enough to be able to use spacers. I'm thinking the way to go is to weld a couple inches on to the head tube. Any body else done this mod with a Revival fork, and a Puch Frame? If so, how did you make it work, and how do you like the fork and brakes?