part 1
https://www.youtube.com/watch?v=Mp7Y220BS9A&t=11s
part 2
https://www.youtube.com/watch?v=DuBvLMBOXoU&t=53s
part 3
https://www.youtube.com/watch?v=y-KAektBmhk&feature=em-uploademail
Fred
Yet another great find, may have to model the interlock tower in the first video, to funky to pass up.
No need for one but I like it.
Ken C
GWN