Agree, use the correct oil.You might want to invest in some Clock oil it’s cheap, WD40 is not good for clocks at all or door locks for that matter.
It's only taken 12 years of ownership to get round to this simplest of fixes! (OK, it was a bit fiddly getting the bezel off the clock without damaging it I suppose...).
How does the bezel come off, Phil?
Is it just a push/force fit on the can?
It’s a case of prising it off very carefully, Stan. The hardest part of a repair by far!
I worked the back lip up with a screwdriver all the way round before I could remove it, but it would be easy to kink the front of the bezel that you see, if you’re not careful.