It's the small things that derail a project. Working on Project Honeydew Cruiser Bike Build

Project Honeydew is starting to look good but I can't cross it off my Honey-Do list just yet. In this video, we install the headset, fork, stem, and handlebar. Then when I begin to attempt to install the derailleur adapter it all comes to a halt. The aluminum frame on this cruiser bike is to thick for the Sun Race 27mm derailleur adapter to work so I need to find some new hardware. While this project is delayed again, it's not like I would have finished anyway...