I put the extension spray tube on my can of Remington drylube and spray down between the forearm tube and forearm hanger. I would not use silicon lube as it can deteriorate some rubber and plastics.
thanks Dave. I took my 7600 apart last night. It is definitely the rubber o-ring causing the stickiness. I will try and get some of this lube locally but I am not confident any of the stores will have it. Anything else you would recommend?
"I am at heart a meat hunter." John Barsness, The Life of the Hunt