The important part here is to give yourself time to identifythe different parts and put them in the right place. What took me the most time was to remove all the blue plastic. As these parts have been on the shelf for 2 years there were glue residues from the plastic on the metasl. I took a fine grain sand paper and cleasred it out. Then I would prime the areas where I had sanded. Later I decided to use goo be gone and that worked well.