✅ Silicone Trivets I Use (Amazon paid link): br br Disclosure: Some links above are affiliate links which means I may earn a small commission if you click and buy, at no extra cost to you.br br Ninja Support: br Smart Finish on the Ninja Double Oven (DCT451) not syncing both ovens? This guide shows the correct setup order, compatible modes, what “Hold” means, how preheat works with Smart Finish, and how to use it with the built-in thermometer plus what to check if it still won’t sync.