I think I got the motor tightened down on the mast better and I think that the antenna is sufficiently tightened down on the motor pipe now. I certainly can't turn it by hand (if you know what I mean). But I'm still having issues where the 4 foot dish movement is intermittent. Sometimes it won't move but if I wait about 5 minutes it does move without my doing anything. Really strange. My current setup isn't conducive to recording any satellite programming. The osmio4k is connected to a 4 port switch and the C-band dish always moves. I doubt that it's a switch issue. It's bitter cold (14 degrees F) so I can't work on it today and the daytime high is going to be below freezing for a few days.
Hit the hardware store and get a roll pin (spring pin) or 3. Pick an adequate size for the job.
Put your mount on the pole where it needs to be and drill a hole through both pipes, tap in a pin. Check it again and put in another pin 120 degrees or so around the mount. Check again and drill the 3rd hole and tap in a pin. That's how mine's been since the Satcom 4 days.
I hear ya'. It's 8 out here. BTW. That there Lucas synthetic grease I pumped in my actuator tube works slicker 'n <insert expletive here>.