My sincere apologies for not responding sooner. I was new to posting and hadn't set up to receive an auto notification for any responses. Also, life just took me away from stereo problems. But thank you for your responses.
Yes, I did correct the problem. I ended up having to change the volume controller in order to fix the problem. It was a long journey but I finally linked in with a contact in the US who sold me a controller. Then, I had to find someone will take it apart and install it. It wasn’t a matter of tubes being faulty as the lower volume was maintained even with switching tubes from left to right.
