You guys are getting me interested in air guns again.<br><br>My airgun battery is not exactly modern -- late 1960s Sheridan 5 mm pump. Unfortunately I can't find my owner's manual & I don't remember where to lube it & with what? For you Sheridan users, what's appropriate?<br><br>My gun's sights are unduly thin at the front & open in the rear. Any thoughts on metallic improvements?<br><br>Thanks,<br><br>John