[SiriusHardware]

Slothie's issue VI has an easy to remember 14 100n decoupling capacitors as it was observed that the decoupling on original MK14 PCBs was minimal.

Colin, I included a link to a potential part for C2 in a PM to you but perhaps those particular ones have gone? I don't know if this is obvious, but you don't need to find an axial capacitor with a body exactly the same length as the distance between the holes, the body can be way shorter - new / old stock ones always have long leads, and you just crank the leads downwards at the right distance from each end of the body. As long as the length of the capacitor body is not LONGER than the distance between the solder pads it will be OK.