I just couldn't let it be so I found a machined 'radiator cap' that fit there perfectly. Now Walt can honk at spectators while going down the return lane.
Well, I lied. I'm not working on the tins, I've moved on to the radius arms. I've been putting them off forever it seems and have been contemplating how to do them so last night, I just jumped in. These are made from stainless steel tubing and rod ends both from RB Motion. I slid a tight-fitting wire down the center of the tubing to where the bend would be and bent them around my conical jaw pliers that's made for jewelry making from Michaels. I think I've solved the issue where the back end piece gets attached to the bend but more on that later. I haven't actually done it yet. I need to order some more nuts and bolts from Scale Hardware this morning before I go too much further on these. I did need to reduce the overall size of the batwings, big improvement.
The fun continues so stay tuned.