Thanks, that makes sense; so it's more about giving the vco time to stabilize its temperature than about "warming up" to a certain temperature. Does this means vcos are more temperature sensative than other circuits, or is it just that we are more able to notice the variance since it's in the audible range? For example, are lfos similarly variable without stabalization time?
As an aside, I dig your signature line. I've come to realize similar, but only after spending years trying to cram as many modules as I could into my racks. Part of it is realizing that this is a hobby I plan to stick with (so I need room to grow and space for whatever amazing innovation is always just around the corner). There's no need to ossify my instrument after only a few years of playing. The other part is realizing that a modular synth is by nature "unfinished;" it is only temporarily "completed" when the player finishes a patch, and then it starts again. The instrument is never stagnant; it grows with you as you grow as a player.
Also, I realized I f'ing hate not being able to reach all the knobs when everything is patched up. I'm now adding in space between modules (or groups of similar modules) to help with access. Sure, I'll lose some hp, but I'll actually be able to reach all the pots. Yay!