my scrambler (55cm) didnt seem to have the best clearance either
i used some origin8 cranks with it and with the 107mm bb the chainring was probably 4mm from the chainstay, when i put the ring on the inside of the spider it would rub against it

i have a feeling using anything that needs a 103mm bb wouldnt fit without some "manipulation" to the stays

i used the same bb/cranks on my 722 and theres miles of clearance now