Long Handled Merker Progress

A Merkur Progress has been my daily razor for the past year and a half ( bought from new after reading the opinions of members of this forum as well as other forums on shaving)Prior to that I used a Mach3 razor. The Progress has been excellent but recently the dial at the bottom of the razor has become too loose so that when I'm shaving the blade gap can be altered if my finger should accidently touch the rotating dial- this problem has started over the last few weeks. How do I to stop the dial becoming loose ? Thanks
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If there has been wear on the adjustment mechanism you can put a drop of an anaerobic sealant, that makes it turn with more effort, more under control.external-content.duckduckgo.jpg
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