Ggggr, you are most kind and tenacious. I understand the gist of what you say albeit I am a rather rare (and recent) collector, I think, in that I have never stripped an air rifle. I have passed on your question to Vic at Protek. There must, surely, be a fault somewhere and, therefore, a solution.

I feel I owe you a very large and generous refreshment but you are rather a distance away!