Railsupport for Boxer2000

My girlfriend and I live separated, and I gave her an automatic gate opener for Christmas.
The thought behind was, that she wouldn't get wet, when she came home from work.
And okay, it was cheap.

I got inspired by the Rail support for Hörmann Liftronic 500 (https://www.thingiverse.com/thing:5474401) made by tcroonen.
So, after printing the one from tcroonen, I found out that it didn't fit the rail on the Boxer 2000, which was the one I bought for my girlfriend.
The rail from Hörmann have a dimension of 51 x 30 mm.
And tcroonen had made it with an adjustable distance to the ceiling from 25 to 61 mm.

And it didn't fit the condition with my girlfriend garage.
Neither the size of the rail, nor the distance to the ceiling.

So, thanks to Fusion360, I made one that fits.
This one is for the rail for the gate opener named Boxer 2000 (or 1st Avenue), and in Denmark it is sold by ex. Jem & Fix, Harald Nyborg, Bygma and other hardware stores.
It is designed for a rail size of 77 x 37 mm, and a