I then carved a hole into the underside of the front tire, and superglued a single 1/16” diameter 1/32” thick magnet into this cavity so that it was at the same level as the tread side of the tire. I then filled in the extra space that I’d had to carve out of the tire in order to get deep enough to fit the magnet in with more Green Stuff, and sculpted it the best I could to look like the normal tire before I’d taken my hobby knife to it. I knew I’d be painting this part of the tire with Stirland Mud textured paint, so figured what I had was good enough.
This solved the problem of the front of the bike’s base dropping down when the bike was picked up.
I used some more Green Stuff to make sure the magnet suspended from the chain would stay in place at both the connection point under the back of the bike and at the bottom end of the chain when I wanted to disconnect it from the magnets in the base and let the front wheel drop down again.