Try using plain Hypo (480g Sodiumthiosulfite in 2000ml water) or Kodaks F24. I just started using ABC after using PMK for awhile now, and the staining properties of ABC are very different. In fact, at first, you'll swear that there was no staining at all. The ABC formula produces a higher contrast negative, so be aware of that fact before deciding to use ABC instead of PMK. I tend to like high contrast subjects, and for that reason, I'm probably going to go back to PMK. With PMK and VC enlarging paper, I use between a 2 and 3 filter. With ABC, 0-0.5 filtration. I'm not too happy about sitting on the far end of the filter spectrum. Not much room for flexibility.