just 2 add my 2 cents: i didn't mean that in a negative way. maybe i realize your part changes more than others, but it seems you are changing parts of every bike every 2nd day. but you just doing it the other way round, so everything is fine.
if the donhue is now THE perfect fitting fixed bike you now can sell the other fixed bikes or changing the not fitting parts for the right ones in realtion to the donhue :)
just 2 add my 2 cents: i didn't mean that in a negative way. maybe i realize your part changes more than others, but it seems you are changing parts of every bike every 2nd day. but you just doing it the other way round, so everything is fine.
if the donhue is now THE perfect fitting fixed bike you now can sell the other fixed bikes or changing the not fitting parts for the right ones in realtion to the donhue :)