Just found this little site that might help someone looking for components diagrams
just go to: http://electricalwhat.com/
Meanwhile I am struggling with the MC3361 oscillation, it's like this: once powered on there's normal noise then after some 5 seconds starts increasing the noise and a slow oscillation them some more 7 or 8 seconds this oscillation decreases and resumes normal operation....could it be some sort of dampening on the quad coil circuit? Is it decoupling? If if was decoupling it didn't resumed normal working beahvior....any ideas?