Juno-106 Oscillator Oreo

Found a Juno-106 in a dumpster and I have been working to restore it. The serial number tag is gone. The key bed has a build date of January 21, 1984. The filter chips are 1A and 1B so this is a VERY early Juno. After watching a TON of videos and doing research, I cannot find in any instances where voice oscillators are stacked like an oreo and soldered together. MY best guess, this is someone’s repair attempt. Anyone else ever seen this before?