Are there any non-obvious settings in the transmitter that'd make an ESC think a throttle signal was being sent and cause issues with ESC calibration?

Page 63 of the manual. VR Adjust menu.
I have no personal experience what effect this will have on an esc.
I Had a brand new unit that I could not program the fail safe for the throttle servo.
Found this VR Adjustment way off for both steering and throttle.
Set it up per the manual and automagically everything worked as it should.
Since then I have checked every radio in front of the customer when new out of the box.
They have been all over the place.

My mts needs to be retired, the screw that holds the base together in front on the batt tray tore through now i need a ziptie around the base to keep the batt door and batt from just falling out. It lasted Probably 3-4000 hours and three seasons bit sadly i cant seem to find a replacement shell for the radio.

Have you contacted Desoto Racing?

What is the concensus on best Receiver with the MTS, RX481?

I'm using 472 for 1/8 and 482 for 1/10th. They're the best Sanwa sells, I believe

Copy guys. Thanks, time to get some receivers

Can someone clue me in on where to find the serial number on the radio so I can send in the warranty card? I think someone mentioned it being the IC or FCC number on the side of the radio but if someone can confirm that, that would be great. I emailed Desoto Racing what I thought were the pertinent details, but haven't heard back from them.

look under the battery

Thank you!

i just found our Sawna only comes with a box warranty, i did not know what . But overall there customer service has been great on issue so far.

I'm going to build a second kit, and wanted to be sure I had something right. One, I wanted to verify that I can pair the mts with second reciever without losing the first. Additionally, can I have a second set of epa's, trims etc for the second vehicle...again without losing all the adjustments from the first vehicle. Thanks .

Yes as long as you program it in and bind it as your second model, you will not lose any settings to your first. They will be stored as a 2nd model. And from there you can continue until your model memory is full.