I found this thread on the F/B. It pretty much answers a lot of questions about modding. Found it on R53 addicts, a great f/b page and got permission to post it here. Maybe we can add to it. Click on the 'continue reading'.. https://www.facebook.com/groups/R53Addicts/
The pinned post....? FAQ's? Some good info, but by no means a definitive guide. Just one guys opinion.