Jack Fox,    / @jackfoxlock   gave me a lock & wanted me to try and decode it, because it's a tough nut to crack.
I tried lots of things, and eventually I found a method to decode & open it.
I've since tested this method a few times and it works each time.
If you lose / forget your combination passcode then this method should work for you.

"SimplyLock", aka "Abra Fox"