Have an older Tagelus TA-60, installed about 15 years ago. It's been sitting up, and MAY need to be replaced - but first, I wanted to attempt to clean it, give it a little TLC, replace the sand/sight glass/pressure gauge/O-ring, check the laterals, etc. In order to test it out, though, I need to know what the handle positions are - the sticker with text is so faded it can't be read anymore. The Owner's Manual, which I have in .pdf format, surprisingly doesn't have a diagram. Can anyone lend a hand with this?