Hotwheels start gate

I made a few changes to a really cool project, take a look at the remote raceway project.

Changes

- Removed the need for M4 heat set inserts, I changed to holes so a M3 bolt with self tap in - I added two screw holes to the lifter, once internal pieces are installed, tighten the screws and it will make a good connection to the starter. I found that more than one connection between lanes would cause binding, So I just use the stick between each of the lifters. - I redesigned the track piece, I prefer the connectors built into the printed track pieces - I redesigned the front and back plate for a 2 lane setup, makes this much easier to build if all you make are two lane sets. - I changed the servo mount, now uses a M3x20 set screw. - I changed how it can mount to a Hotwheels mount, I combined the parts from several Thinginverse Hotwheels clamps in this set. - 3mf files showing the print orientation I used. I have given away each build as birthday presents, so currently don't have any complete pictures.