In my Jobo, I develop 35mm tri-x in pyrocat, mixed 10ml each of solutions A & B to 500 ml of water for 6 to 9 min at 68 F, with a rotation speed of "3". I presoak for 5 min. I use a plastic jobo reel,i think 2502 (i'm not home, can't check) I've noticed no problems with uneven development around the sprocket holes.