HP5 streak w/Pyro

I just developed the above roll of 120 in Pyro and fix w/ TF4 following the
recommendations in the book. I've been using Pyro for about 4 years now and
have had good results overall. I noticed a random pattern of streak towards
one edge of the film. It is similar to the pattern you get when you take a
wet brush and shake it towards the ground in one stroke. Under the loupe it
is tiny black spots in a strip nearly the entire length of the film approx
1/16th inchwide. Is this left on from the wash process, perhaps? I washed in
a 120
metal film tank w/ four small holes in the bottom for 30 mins. that I hadn't
used before. Any knowledge is appreciated- Lib

Update; I developed another roll using some of the advice that was passed on
to me( I shook the Metaborate vigorously before using and I turned the roll
over in the tank half way thru the wash) and it came out much better. I'll
print them and see what the difference is in the finished product. Thanx for
the info. I was surprised to see that my inquiry set off such a spirited
response to what appeared to be such a mundane question. It seems a pity
that Mike Moron has so much boorishness, but so little to add when one
requests information. In honor of my parents advice, I choose not to battle
wits with an unarmed person, so I will get on with life- Lib

lib wrote:
Update; I developed another roll using some of the advice that was
passed on
to me( I shook the Metaborate vigorously before using and I turned
the roll
over in the tank half way thru the wash) and it came out much better.
I'll
print them and see what the difference is in the finished product.
Thanx for
the info. I was surprised to see that my inquiry set off such a
spirited
response to what appeared to be such a mundane question. It seems a
pity
that Mike Moron has so much boorishness, but so little to add when
one
requests information. In honor of my parents advice, I choose not to
battle
wits with an unarmed person, so I will get on with life- Lib

Seriously, 'lib', use something else. We have moved on from Model T's...