Hey folks! I'm excited to say that I now officially own a flip-top amp! The original owner said he bought this amp in 1973, and I was wondering if I could get some help confirming what year it was manufactured. As well, do you folks have any recommendations for sources of Ampeg schematics? It's going to need a little TLC, but I look forward to cleaning this amp up and using it to record. Looking forward to hearing what you all think!