Everything is now put back and camera is now good running condition.
I have discovered that this model's meter is mechanically prevents the meter indicator to move while galvanometer's needle is moving properly. On Auto exposure, the meter display starts moving and stops down f stops automatically. To use this model on manual, you have to use the external meter.
I now have a Bell & Howell Canon Canonet 19 and Canon Canonet QL19 for sale. Please write me through eCrater contact page or through eBay ( I do not like too much.)
Camera repair and camera instruction manuals. If you would like to buy the manuals but the links are gone, please write. I can update the links.