I haven't tried 200 since I always got wrinkly tops even preheating to 170 and then turning off when I put in the soap. I fear that going up to 200 would make things worse, even if I took it out sooner. Perhaps I should make a small test batch just to see. But normally my soaps gel without extra heat, except for cavity molds, so my motivation to try it is rather low.Have you ever tried just putting it in the oven at 200 for a bit? I've done this the last few times I soaped and it worked out well. I can't do a true CPOP because my stove is old and probably cheap and won't hold the heat well so the soap just ends up sitting in a room temperature box all night. But, the last few times I heated my oven to 200 (lowest temperature), but the mold on the top rack and left it there while I cleaned up (I'd say about half an hour to an hour). If the side of the mold is toasty and warm then I can take the next steps. Maybe you could just leave it at 170 for a bit?