Hi - I have a 21" steel framed Claud Butler that I used on a recent loaded tour to Paris. I am 6ft 1.5ins and all the info I can find suggests the bike is too small for me (suggest I need a 23" frame). I found it fine on the tour and am thinking about using it for a much longer tour. Are there any reasons I shouldnt do this? The one benefit of a smaller frame is a shorter top tube which means I dont have to lean forwards so much....has anyone got any thoughts or advice?