Sorry, it's the armhfp image. I never see a boot menu (is there one?)
because after the colour splash screen everything is an interlaced mess
until the second stage of the boot when progress starts scrolling up
the screen.
I was after a permanent method of changing the boot kernel, which I've
now found after dissecting the scriplets in the kernel-core rpm - the
kernel-install command. I've therefore fixed the immediate problem,
when I've got more time I'll find what has changed between the two
kernel versions to upset my screen.
Thanks!