Hey everyone, first time posting here. I've been building the falcon the last week or so and starting looking on how to change the engines. There are a lot of great ideas on here but I like @Lock's the best. I just had one question before I ordered the parts. Your LDD shows a 3 stud and video show a 4 stud middle, but I thought I read somewhere in here you went to a 5 stud middle? Could you clarify that for me? Thanks!