I am completely new to bike building but am interested in building a walworks style mountain bike fork 26" . I would like the fork blades to be parallel. I weigh 165 and this will be for trail riding and not heavily abusive riding.. can anyone recommend tubing sizes for this fork? outside diameter and wall thickness. I am thinking of using 4130 tubing.. thanks a lot, also if you know any good sources?? can I braze weld a fork like this?