Hi guys I have a dx3r was running fine till the other nite truck would not go straight could not get it to adjust on my buggy and sct running a Orion servo on truck and savox on buggy. Is it time to switch radios

Try switching receivers with one you know works (try binding someone's car at the track temporarily.).

If this solves it you know the problem is with the receiver.

Then try binding your receiver to a known working transmitter, if it works fine you know your transmitter has the issues.

Or you can contact Horizon support and send everything in, but I warn the repair costs are usually quite high.

Hope this helps.