I had the same puddle like effect from the greyscale spot pens but found that if I dabbed at the print making a series of tiny spots they dried out quite well. I actually like them as they are always ready for little quick jobs even on Ilford RC.
I have never used Marshalls oils or any color and would like more info as I have a couple of prints I would like to add a small accent to. Where is a good Net site for info?
If cropping causes the turmoil of those recent long threads what might this topic start????? OH THE HEARESY!!!