[Closed] bb axle width, crank/stay clearance question?

right, still doing my retro build.

the driveside crank seems awfully close to the stay when rotating, nothing touchs but there only 2 or 3mm in it.

the bb is a square taper, and the cranks are old m550's

is this ok or do i need different cranks or bb, can i space out the bb (i am thinking not as the axle is likely one piece?)

help with jargon, cheapest route would be good?

had a look at sheldon brown here

http://www.sheldonbrown.com/bbsize.html this says the cranks (m 550) need a length of 122.5, is this axle lenght required? so do i just need to shop around for some cranks which require less lenght? any suggestions?

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