Also, it could be that your darkroom viewing light (the one you use when judging your print after fixing) is inconsistent.
What works for me: 40 watt bulb, about 1 meter up from viewing surface pretty much straight up (I don't know the precise distance, but it is mounted in the ceiling and always the same, covered by diffusion glass.)
Pull print from the fixer, rinse for 30 seconds in a tray of water.
Place on a piece of glass at right angles to my eyes, as I stand and look down at it, staight on (so, the print is just above counter level). Final dried print always looks right, and my system also accounts for print dry down.
I had to try different wattages, etc, till it worked, but it always does.