Friction shifting stuck in last to high gears?
So I purchased this nice ross road bike for my sister. I know how to do simple things, cables, bar tape etc...However, shifting is different. The shifting on this is a 6 speed with downtube friction shifters. The right shifter is currently flat with the downtube, but is in the second to lowest rear gear. I pull up and it will go to the lowest, set it back even to the downtube and it pops back one. So my question is this.
How do I get the shifting back on track, I need to get the gears all the way up to the highest rear gears, but run out of shifting when the shifter lays down and reaches only to the second lowest. Can someone give me some insight on how to readjust the shifters range? Hope this makes some sense! Thanks