I just traded a Trek 29er hardtail that I had $550 in for a 2006 Trek Fuel 70 and $200. I ride all mountain and already put the $200 into the bike. The Fuel that I have needs new frame bushings and the bolts keep coming lose so I just put some threadlocker on it and they haven't come out. What I am trying to figure out is it worth putting another $300 putting another fork on it and getting the frame good to go? Everything else on the bike is fine. The other option for me to do would be try to sell the bike like I bought it for $450-500 and use another $300 to buy a all around better bike that fits my riding style better and put the upgraded parts on it. Help me please. Comment if you need any information.