Sorry for jumping in late...
...don't know if this helps or not.
I noticed while I was printing yesterday, that when I used Fine Art Photo Supply Perfecta D paper developer, that finally my Agfa RC Classic (matte finish) displayed a rich black as opposed to the somewhat weak black that Agfa Neutol presented with the same batch of paper.
Perhaps just playing around with different paper developers would yield better blacks with the Ilford MG IV? Just food for thought.
I thought the Perfecta D worked absolutely stunningly, with rich creamy tones, with a very strong maximum black, yet great separation in subtle tones.
I haven't tried the finer developers, such as Amidol yet, but of the four different developers I've worked with so far: Perfecta D, Neutol, Dektol, and one Ilford product, this was the easiest and best to work with.
- Thom