Hello, I asked this question on pure-silver board but did not catch a lot of
attention. My  apologies to those who get the message twice because of
crossposting.
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Hi,

I see denser parts in my 35 mm film. These denser parts are in forms of
streaks running vertically when I lay the film strip on a light box.
Actually, they are very faint but becomes visible in prints. They are more
visible if there is happened to be a uniform back ground (like a little
darkened sky). I made a research on the Internet a while ago and suspect
that these streaks have something to do with the flow (hydrodynamics) of
developer through sprocket holes of the film. I might be in error.

I have a current sample frame and would like to share it with you but am not
able to put it on a web page. It is Tri-X and developed in T-Max 1+4. I
agitate in a small Paterson tank. I combine two agitating methods in an
effort to stop this streaking problem (appearently, I failed).  I first
agitate by rotating the little stick through the middle point of the
development time and then continue agitating by inverting the tank. This way
I hoped to get more even development. I figured inverting the tank causes a
lot of flow energy through the sprocket holes, and it is better to use it
after film is developed to a certain point and the developer is somewhat
exhausted. I thought this method helped as I did not have the streaks for a
while but now streaks strike back, not as dense but close and visible.

I appreciate every bit of help a lot. Thank you.

Alparslan