use an empty CO2 cylinder to improvise a compressed air adapter so that the leak issue can be investigated while compressed air is being applied using an air compressor instead of wasting CO2. This allows extended time to inspect the leak because with a CO2 cylinder, the pressure is quickly expended before the leak can be examined. In this case, a Daisy Model 200 from the late 1960's that is very much appreciated for its grip angle of 125 degrees and accuracy and performance. Also has a very nice trigger, better than anything found available lately
