Most of those modification videos that you see there were done by Jeff Little. You'll find him right here on the forum from time to time. There are others that will be coming about light mods. I know Tommy has a couple at least with his partner Jeff Lahr that we could post up soon.
Let's face it Do-It can't make a mold that will make everyone happy all at the same time. They are produced in a foundry off of a pattern which is why there are many general and assorted applications. Modifications happen to Do-It Molds every day and we encourage you to make a mold "your own"...to make it do what YOU want it to do. Some modifications are much easier than others but we'll see what we can do to show some common modifications.
Glad you like the videos and thanks for the input,
Jerry