So I bought a $360 mountain bike from my local sports shop. Its a diamond back by the way. Anyway I have had no real legit problems with it until i noticed my front suspension was like brick hard, so I did the little spin top on the top of each fork to easen the preload, but that didn't work. I took it to the sports shop I bought it from, and they just said since its a factory set suspension that they just threw on, it is not really worth it to try to fix it. So here is the question. I really want to get into mountain biking which is why i bought the bike, and since im only 15 that will probably be the only bike i will have for the next few years. So, that said would it be worth it to buy a front suspension on it? It doesn't have a back suspension by the way.