Hi , I am new here and new to mopeds, I have always worked on and around old trucks. I have a 1978 Columbia Commutor, it has a Sachs 505/1A with a Bing 85/12/101a carb.. What is the rated power , is this a two speed trans ( it feels like it shifts about 10 MPH )? What shoud I put for oil in the clutch cover, and what and how do I put in the gear box. how can I get more power from the ol girl, I also would like to find a new old stock petcock. Thanks for the help.