From the files of a Moog 55 Kevin restored back in 2011:
Images
Kevin had a lot of neat little projects involving Moog Buffer Boards. This was a day he decided to start building LFO’s. Date of file says early 2014.
In going through my old computer, I found a series of videos of Kevin working on an Arp 2600. Most likely late 2012, from the file names.
Living room, December 2006
“OMG VCO’S were in foil!”
This is from a Moog55, late 2010/early 2011.
More will be featured from this particular unit, as it’s got quite a story!
Video dated 10/9/11
Found this in Kevin’s “work” folder:
Open High-Hat decay extension
TR 808 OH decay mod
Minimoog, 2012
Mini problem found…
…and it’s verified as being worked on by Kevin due to his feet being in the picture. 
All the black resistors on the VCO board are either 1% or .1% tolerance. FYI, there are 6 sets of 3 matched resistors that are vital to the synth staying in tune and tracking well. Kevin started replacing these during the last few years he was working on Minis.
A picture of a Minimoog Kevin took in 2006
Matching 901 Transistors
Happy VCO Day!