OK you want answers, I will give you answers/ or at least my best guess.
First off the transmitter and receivers have to be on the same channel, period. That is a fact.
Second switching crystals from your electric may not work and as has been mentioned is even illegal to do in your transmitter.
That said you have one other factor, your electric, I am betting, has a single conversion receiver and your new glow plane probably is dual conversion. Meaning you need a dual conversion crystal.
Bottom line?
Get a channel 37 crystal (probably dual conversion, it will say on your receiver) for your receiver. If your local hobby shop does not carry crystals you can order one from Tower hobbies.