I had the RX shutting down issue as well. Installed in a Tamiya mini. It'd shut down if I clipped th boards. I Imagine the servo must draw a huge spike when that happens. Added a glitch buster. See how it goes on Sunday.

Another weird thing with the SR2000 is I can't get it to stay at a 5.5ms frame rate. Each time I turn the radio off, then on again, it's back at 11ms. I'm using a digital servo and rebid when switching rates. Any ideas?

UPDATE:

I tried a different receiver just now, an SR3250, capable of 5.5ms frame rate, just like the SR2000. Here's what happens.

Turn on radio, then car.
go into "settings -> frame rate"
select 5.5ms
follow instructions to rebind after changing frame rate.
on the "settings -> bind" screen, at the bottom 11ms is displayed for the SR2000, 16.5ms is displayed for the SR3250.
I go ahead with the bind procedure, as instructed

Once complete, I turn off the car, then the radio, remove the bind plug from the receiver.
When the radio is restarted, followed by the car, in both cases "settings-> frame rate" displays 11ms again.

Very odd. Maybe I'll try not rebinding?