I have a 2011 YZ450F. I need to change out the stock springs ones that are for my weight. I have never done this before and scared to screw anything up. I have read my manual, and it is very vague, I want to hear from those folks that have changed there fork springs out often, and what advice you can give me before I attempt to do this on my own. I have changed rear shock springs before, and that is easy to do. There are also so many different oil weights for the front fork. I was thinking about going with a 5 or 7w. I'm also 238lbs without gear if that helps. What tools will I need to complete this job? I will need new fork oil I believe, and a fork cap wrench(?), I can't make out fro the diagrams in my manual, but it looks like the spring is at the bottom of the fork tube? Could I just take the bottom cap off, slide out the old spring and slide in the new one? Thank you all for your time. I look forward to tackling this and learning something new.