Looking for railings, doors, hatches, ect.- was a bit tougher than I thought. Thanks to all that made suggestions, including Lars & others.
I found them in the form of brass sets offered by Triumph Models. Other retailers may well stock Triumph Models wares, but I found them thru Hobby Easy in Japan on Sunday....finally !!
And I must say- the prices were stunningly reasonable- great even !! I ordered a total of 6 PE sets for roughly $22. USD & $11. for shipping to the US from China.
There was gold at the end of the rainbow, it seems.
Too good to keep to myself, certainly, so I felt the need to pass this on, on behalf of anyone seeking generic 1:700 WWII Soviet PE for their own kits that await building.
Now if only the PE producers that I emailed would make dedicated sets for particular 1:700 Soviet WWII vessels.
Of these, TASHKENT probably has the best shot at it, as it is mass produced in plastic....
I don't see PE being produced for resin or 3D print kits, which is understandable. TASHKENT getting a set is probably a stretch at that....