I am considering getting a replacement fork for my commuter bike. Currently there is a suspension fork of it. I was considering moving to a rigigd since they tend to have fender mounts and i feel like i lose power when out of the saddle on the suspension forks. What do i have to look for in such a replacement fork. When looking around i have seen references like "non suspension corrected" that concern me. Also, how difficult is it to replace the fork myself since i haven't done it before. Anything i should be aware of. It is the threadless fork.