Hello and welcome.
I'm afraid I agree with Paul. Maybe better to post here:
http://www.vintage-radio.net/forum/f...play.php?f=145
Transistor amps are tricky to fix, even for those of us with lots of general electronics experience.
Just because the transistors were overheating doesn't mean they are faullty. It's more likely that something else is causing them to heat up.
Good luck with it whatever you do.
Nick.