I have also profiled both Ilford Classic Pearl, Classic Smooth Pearl
and Colorlife paper for my Canon i9100. I used Perceptual when making
the proiles. Amazingly all the profiles are very consistant, but all
are yellowish. I have to add +5 blue to the profile to make it come
out close to the monitors. It's not a big deal, but I figured that
everything would match closer than it is.
Canon i9100 printers use dye ink, and are prone to color shifting under differing light sources (illuminant metamerism, for short). You don't mention what kind of light source you are viewing your prints under, but whatever it is, with this printer, your choice of final color balance and neutrality tweeks will be slightly different under other types of lighting. The fix, and you note, is quite straightforward, which is good, as the issue can't be eliminated without removing all illuminant metamerism from all colorant/media combinations.
...and are you sure you made the correction needed for paper with optical brighteners? I didn't the first time I tried PFP, and the profiled prints were yellowish.
Myron