I'm looking to start a warrior build,but I'm having a hard time finding old bikes with threaded stems much less matching ones. I have a tube off one that i can use for both sides, as itsover 5", but only one fork. Is there any reason why i can't split the threads from the one fork and weld them onto a tube for both sides and just order a set of bearings, I cant imagine they need 1.5 inches of thread when it looks like the cap only uses the top maybe .25 inches?