Gibson GRC70 gold chorus:looking for a schematic.

[alexradium]

hello everybody,i asked Gibson's customer support and no reply,so,if anybody has something related to this model(2x12 SS) thanks in advance.
The chorus doesn't work,its a classic mn3007/3101,but slightly different from what i've seen on Roland products,that's why a schematic would save a lot of time.

[Ironwolf]

I have the 1x12 version of that amp. I love it. Has a great dirty tone. At any rate I am looking for a schematic and owners manual also. Any help would be greatly appreciated