Printing out QTOPO Maps

Hello All
2 part question
Part A: How do people find QTOPO Maps, I'm looking at them but it seems only a selection of tracks and roads appear on them (Looking at Paluma Dam, where there should be an old forestry road continuing from the dam wall) is this deliberate in the maps, or do I have the wrong settings?
Part B: What size of map do people prefer most? does the larger map give more detail, or cover a larger area?
Your comments are appreciated
2 part question
Part A: How do people find QTOPO Maps, I'm looking at them but it seems only a selection of tracks and roads appear on them (Looking at Paluma Dam, where there should be an old forestry road continuing from the dam wall) is this deliberate in the maps, or do I have the wrong settings?
Part B: What size of map do people prefer most? does the larger map give more detail, or cover a larger area?
Your comments are appreciated