sometimes tuning doesn't work. it may work for a few kc but then I'm spinning it and it doesn't move... any ideas?
Joe, you may have a conflict of com ports. this happens sometimes with flex control. try adjusting the com port for your flex control to a different port. use a high number, say like com 55, something that is well out of range of the others. This has worked in the past for some with this issue.
This sounds more like an issue with the USB port not keeping up (https://helpdesk.flexradio.com/hc/en-us/articles/202118458-How-to-Mitigate-FlexControl-Latency) or a shaft encoder issue.