Anybody have experience in regular maintenance for the Argus? The manual is vague and without pictures. Internet search didn't find anything regarding this particular gun. I have shot about 1000 pellets and the only thing I did so far is to clean the barrel with patchworm and ballistol after 500 shots. I am not looking for full disassemble of the gun to lube all the moving parts. I am just looking regular maintenance. I have attached a screenshot of the manual and hope you guys can give guidance.