I do not belong here, first. I am not Electronic. I was a papered Machine Repairman once upon a time.
I bought RC boats for my grands, Tamiya, one 27, the other 40 MH. I bought another to play with them. It too. was 27 MH. It interferes with one of the boys. Do I just go to local hobby shop and have crystals changed to allow all three of us to play with boats at the same time?
I have NO idea how to do that. No instructions with the boats other than print upon the bottom of the box.
George