I AM USING AM OLD NIKKOR STAINLESS STEEL TANK TO DEVELOPE 4X5 NEGITIVES. MY AGITATION IS TWO INVERSIONS EVERY 15 SEC. THE CENTER GUIDE ON THE REEL THAT THE NEGITIVES GO INTO CAUSES ABNORMAL FLOW OF DEVELOPER ON THE NEGITIVES, CREATING A SLIGHTLY DARKER LINE ON THE PRINT. YOU CAN ONLY SEE THE LINE IN SOLID TONE AREAS LIKE CLOUDLESS SKY. THE REST OF THE NEGITIVE LOOKS PERFECT. I HAVE HEARD THAT PYROCAT-HD HAS BETTER CONTROL OVER AGITATION THAN PMK.(posted 8415 days ago)MY QUESTION IS: WILL PYROCAT-HD HAVE THE SAME EFFECT AS PMK, BUT WITH LESS PROBABILITY OF AGITAION PROBLEMS?