i rebuilt mine , did have to utilise kit , and work things round in my own way, i got all my parts from ashcroft engineering who were most helpfull. you will also need a dti guage for setting up the end float when you rebuidl it . they have selective washers . and they arent that cheap so try to get it right 1st time. you will have to get a manual . think i downloaded mine off the net somewhere . to be honest i think next time i will pay and have one of theres , i was in the same position as you but have knowledge of boxes but not an r380 and thought it not the easiest. bet it cost me 150 pound cheaper to do it myself by the time i bought all the bits. hope this helps . alan