Thanks for the post, this project kind of got put on hold for now, but it was working fine. The biggest issue I was running into was the lines that fold the ramps.
The stock ones got worn out so I had to hunt down some new lines that did not stretch. Once I did that I was working out the lengths and adjustments to get the ramp-ends to fold again. I was making some good progress.
As far as the gearbox and electronics, everything was working well for me.
I will update this thread when I resume the project.
As far as getting a job like mine, 1st you would need to be in the USA.