I have one in excellent condition, channel B, with throttle spring removed, added 9v headphone-style DC plug for charging, and plastic charging clip from aeroacemods.com.
Also have one that is in not so great condition, it's the "cadillac" transmitter from aeroacemods.com, switchable channel a/b/c, with throttle spring mod, added 9v headphone-style DC plug for charging which works great, but Tx is partially fried and only works to a couple meters distance.
See attached photo. Pick one or both and make me a reasonable offer.
My Aero Ace got treed and I've moved on to larger models.