OP, that bike from wallmart new was around $150. You might spend that or more just trying to replace the frame and fork. If I were you, I would look for another good used 29er complete bike deal on CL or Ebay locally. I know that you are attached to your current ride. However, you need to consider how much your time is worth. Its good that you learned more about bike mechanics and became more self-sufficient. But I think you could exceed the price for a new one with famset cost and time to build it up. Also, if you are willing to broaden your search for 26-inch MTBs, then there should be a veritable plethora of old school hardtails around in that form factor as well. Many folks take them and convert to touring/commuting bikes as well. There are many threads here on it.