I brought a Meterk crimp tool (from Ebay, they are between $12 -$16) and after watching a few YouTube videos on how to install servo plugs I was ready to give it a try (). In the videos they recommend doing a few practice crimps to get the feel for how the tool works and how to position the crimps. At first I thought, well that's for R/C guys that don't build, I can do this straight away. Then I thought just to make sure I understand everything I would do one test. Well, that was the right decision. The first crimp was close, but didn't get it prefect. I did a second one and got it right. I then put all the components in place and marked where I wanted to cut the wires (this was the wire that goes from the ESC to the timer, shortened it by about 7"). From that point it only to 5 minutes to do all three crimps. The Meterk crimp tool (works the same as the one in the video) is very easy to use and the crimps are not expensive and were available at my LHS.
Best, DennisT