This has been a long and complex build with casualties...

In a usual build, you need to figure out how to place your components in a single stack. Here, there are two stacks and it takes a few tries before all components are in place. The el Camino frame is really nice with a plenty of space that allows a lot of flexibility to where the components go. I just wish the bottom plate had slots for m2 screws instead of m3s. Most people will be using RunCam Split Micro and Zeus FC and both use m2 screws, so why make the 3mm slots? Please make sure you have plenty of 2mm or 2.5mm washers for the build.

Also, I wanted to check out the new Frsky R9 long range system priced much more reasonable than the Crossfire. I couldn't get a new R9 mini receiver and the R9 Slim is discontinued. R9 Slim+ has two antennas. It's not easy to put one 6" antenna in a 3" quad, and there are two here. Probably not the most optimal antenna placement, but hopefully it is good enough. A word of caution - do not use the cable marked "Con2" in the connector on top of the receiver. The Con1 and Con2 cables look similar except they are mirror image of each other, flipped 180 degrees. Just put the Con2 cable away the moment you get the receiver. Of course, make sure you flash firmware everywhere - receiver, module and radio.

The weight without the battery is 127g.