Stereo Memory Man schematic and/or help needed!

[SonicVI]

Does anybody have a schematic for an original 80's Stereo Memory Man, EH7811B, the version with stereo outs and FET switching?  I've looked all over with no luck. Only found one for the reissue which is not entirely the same.

I just got the pedal and the echo works but the echo level doesn't match the dry signal and it won't feedback into oscillation unless I lower the feedback loop resister dramatically.  There's gain being lost somewhere but I'm not sure where. The gain trimpot is maxed. I replaced all of the opamps, which are all receiving +/-15V.  I'm not sure what to check next.  Any ideas?

[Scruffie]

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