I have a 2010 d/c BT50 with a badly sagged rear end. Realistically, I know that I need a set of 300kg constant load springs, but having just spent a grand that I didn't have on the front end, the finances don't allow it at the moment. I managed to pick up a complete standard suspension for free from a bloke who had put a lift kit through his, and was planning to just swap out the springs. Then I got to thinking about taking a leaf out of my packs, and adding it to the "new" springs. Is this feasible, and if so, what are some of the things I will need to look out for? I know that I'll probably need longer u-bolts and a longer locating pin. Which leaf should I add? The primary pack has 3 leaves, with 2 secondary leaves. Also, when putting everything together, what type of grease should I be using, and where does it go? Do I just grease the pin through the bushes, or should I also be greasing the bushes when inserting them in the spring? I'll be using the rubber bushes from the "new" suspension, as they are still in good condition.