Thanks for the suggestions.
I don't want to use the T setup because... then I wouldn't have any room for the ESC.
I tried the only compatible receiver, the FrSky TFR4. It's great for 1/4 the price of the original, but I had 3 separate incidents : one-second loss of control twice, and once it picked up the signal from another radio, as if it was FM with the same crystals. Restarts and rebinds didn't help. I'm not THAT nostalgic, so I'm not comfortable using it for racing any more.
I'll have to put it on its side if I can't do otherwise.
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