Hey magic_hands, don't feel too lonely....I'm in the gel club with you.

Or at least, I WANT to gel but I've been having hit-or-miss problems lately. I have a wooden mold that comes with a fitted lid and I also have a double-sided dam so since I am working my way through BB's sampler FO packs, I usually split my batch in two and scent and color differently. I've made about 12 batches so far and the last 4 have had this problem where one side will gel but the other won't. The recipes are exactly the same and the insulation (the wood) is the same for each half. Lately, I've started adding a towel to give a little more insulation but I watch it to make sure it doesn't overheat.
My last batch was half Kumquat FO and half a scent blend of my own blend (Lettuce FO, Tangerine EO and a touch of Neroli FO). The side with my blend gelled nicely and is ready to come out of the log but the Kumquat didn't gel. In fact, it stayed in a semi-solid state for about 24 hours. When I saw what was happening, I added extra insulation just to the side with Kumquat but that didn't help either. I did zap test and no zing so I removed the lid at 24 hours and it's drying out and becoming solid now. But I can tell I won't be able to unmold it anytime soon.
I didn't list my recipe since it's the same for both sides. My lye solution was 34% and I did a 7% lye discount.
This is VERY frustrating. Anyone have an idea as to what could be going on?
Thanks,
zeo