I use split grade (0 & 5) almost exclusively for my own printing. I do develop negs to a higher overall density to help with this though. When I am printing for other people, I generally use single grades as it is much quicker.
I think the issue with your original Grade 2 print is that it is over exposed and is too flat in contrast. You could have got a much more acceptable initial print by decreasing exposure and upping the grade.
This may not apply to you (you might be doing it already), but I think the best thing printers can do to improve their output is to stop judging prints on the whole tonal range, and start following this workflow:
1. Find the most important highlight, and do a test strip over that at your usual grade (2 1/2 or whatever). Select the time that shows the first step above paper white - this will be your overall print exposure time.
2. Do a work print at this exposure time. Judge the shadows - look for the most important shadow in which you want detail to remain. If this is blocked up and black, then you need to go to a lower grade, if the print is flat with no real blacks, then you need to up the grade.
And that is it. Compensate for dry-down. You can mess around with dodging and burning if you want a punchier interpretive print
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As far as your split grade is concerned. As already said, you are getting better with each try. I think at the moment, it is lacking some bite to the local contrast in the cat's white fur. I would be tempted now to do a grade 5 test strip over the top of this area to determine a burn-in exposure to really make it pop.
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I have quite a few Printer's Art articles on my website where I am using split-grade, they might be useful to you - see them in practice so to speak -
http://leontaylorphotography.tumblr.com/articles