I have a question about servos. I have a radio (transmitter) that I've used on one of my small rc boats. I'm thinking of building a park flyer, and wanted to use this radio with the park flyer (to save money). It's a futaba 4channel. Is it possible for me to purchase two servos separately to use on the park flyer that would be compatible with my 4 channel transmitter I have?

Thanks very much