I'm not positive but this might be what you're looking for
http://www.nostalgiaair.org/PagesByModel/153/M0002153.pdf
I take it that you're saying that wasn't the right schematic. If so, I'm sorry about that. I’ve had a couple of Sky Rovers that were made by Belmont and I thought that might be the case for your set.
Can you post a picture? If not, maybe if you post a list of the tubes, someone else here might be able to help.
Leon