Ahhh, I guess it is a DIY..... My first DIY. This is a big day!
Thanks for the zip tie tip - I'll rectify that next time I'm naked
Update: I tightened the mount before coming home, and it definitely helped. Bumpy roads may be too much, but I'll continue to test.
I also rememberd that I forgot to hook-up the headlights.... dohhh!!! Glad I didn't get pulled over - fixed before I headed for home.