Originally Posted by J Miller

Query:

The 15-91 I rewired, cleaned and lubed makes a kind of a dry sound when I use it. Totally different from the 201-2. It's almost the kind of sound a machine makes when some part hasn't gotten lubed in a long time. I've Tri-Flowed this machine till I'm blue in the face and the noise persists.
It sounds as if it's coming from the bobbin end, but I can't be sure.

Any thoughts or suggestions?

Joe