Breather tube in 1988 90Q

[Radek]

I just discovered that the breather tube, one that connects the crankcase to
the intake, has collapsed.  It's S-shaped, wider  and flattened at the
crankshaft end, narrower and round at the other end. Contacted Audi - they
changed the design and now sell a metal tube plus two rubber fittings for
about $130.

Has anyone dealt with this problem before?  I would just buy a length of
rubber tube if not for the fact that one end is wider than the other.  Is
there any reason for this. Any suggestions how to deal with the problem
without spending big $$$?  Thanks.
Radek.
1988 90 Q