Good to hear Ikea is in progress. I'm curious as to how and why the above is happening - I can't make sense of how that will work in my head. It sounds like you've found the information you need but let me know if you still need photos. As for washers in the bulkhead bolts, yes they are usually present (up to 3) but there was obviously some process for determining how many (if any) were needed each side at the factory to get the bulkhead square.

