I have a very nice (looking) Rollei 35s (Tessar glass) (circa 1966) "made in Germany by Rollei" model and it doesn't seem to want to load. I have followed the directions but the winder seems stuck (or locked? it really feels locked). I know this camera isn't exactly intuitive but I find it hard to believe the camera is broken. Or I want to believe it isn't.. The meter battery is assuredly dead (1.35V button cell) but that shouldn't prevent the camera from working..(or at least winding..right?) Are there any known tweaks with cameras like this? Such as unscrewing something and resetting a winder, a lever, etc? Thanks!