I decided tonight I was going to take it apart and swap some parts with another chuck to get it working again, what I found once I got inside has me perplexed and more than a little bit angry.
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One of the chucks had a scroll ring with 45 teeth and pinions with 10 teeth while the other has a scroll ring with 39 teeth and pinions wih 9 teeth.
I opened a 3rd chuck and also found a scroll ring with 39 teeth and pinions with 9 teeth. The 2 incompatible chucks were purchased from my local Woodcraft store about 2 1/2 years ago about a week apart, the 3rd chuck was purchased from the same store a couple months ago.
Now I'm down a chuck until I can get this corrected. While I had all 3 chucks disassembled I swapped the rings and pinions on the chuck that was having problems and the chuck that I use the least so I'm not completely dead in the water.
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