So I'm working on talking apart my first bike ('72 Raleigh Gran Sport) and have it nearly complete. My last task was to take the cranks and chain ring off but the dust cap on the left side is apparently stripped. The right side came off fine using a small allen wrench, but when I tried the left side it looks more like a circle than a hexagon and the wrench just spins.
I'm hoping someone has some neat trick I can use to remedy my problem before I resort to my usual "try everything until something works" approach, which usually just makes things worse.
Thanks in advance for any help you can provide!