The answer patches that are provided for (at the time of this writing) Serum, Sylenth1, and Massive, do not correspond to the On Your Own patches. Instead, each of these synths have their own Lesson Pack that you can download directly in Syntorial. These lesson packs include dedicated patches to recreate in their corresponding synth. After downloading a lesson pack, the Syntorial synth / Primer preset menu will now have a dedicate folder of presets to recreate, and the answer patches will match these.