I cleaned all the battery contacts. Spray the product into the lid, or another suitable container, then apply it to the contacts with a cotton-bud or similar. I can't help with the manual wind as my camera is the SQ-Am. You can wind a frame on manually with the knob on the film back. You could try that to see if the resistance varies that way. I loaded a film today and wound it to the first frame that way. There was a distinct change in 'feel', but this was probably the start of the film feeding past the rollers. I hope you get it fixed, as it is a great camera. Alex.