Vintage Synth Repair

Got my Micromoog working (it took 3 years!).

Now the LFO doesn't work. 

Bend, Noise works. Everything else Square Wave, Triangle, S&H AUTO etc.... only produce a different in pitch. The RATE knob has no effect.. The routing switches work.

For the people that have worked on the Micromoog, does this sound like a common problem? 

Thanks in advance.

Aron