i realise this is a strange question but,i have noticed that on some racing bike,s the handlebars point down slightly,is there a reason for this ? when i build a bike up i keep the bars level with the stem (looking from the side elevation)so as to keep a symmetry, (does a downward sloping drop bar create a less wind resistant riding position ? ) i have a 3Rensho which came to me like this and to me it just looks wrong,should i adjust it or leave it as is ? i know you learned lot will steer me in the right direction ! many thanks !