If you have the space to store a few of your more popular pieces. Go for it. Build as much as you can so when things do turn a corner you have stuff ready to go. When customers come to you and ask you what your lead time is you can say “I actually have that in stock and ready to go” They will be pumped. No one likes waiting for anything. It also means you get paid straight away. https://www.quora.com/profile/Wovenwood