I'm running GRUB 2.00 on a Gentoo Linux system.

I compile my own kernels manually, and then I install them in /boot with make install. I have the following kernels in /boot at the moment:

Running grub2-mkconfig results in the following output:

If I now read the resulting /boot/grub2/grub.cfg file, I notice that the following entries have been created:

The problem is that at boot time I'd like to load by default the fifth revision of my kernel (vmlinuz-3.7.4-gentoo-5), not the third one (vmlinuz-3.7.4-gentoo-third). I also prefer not to access the submenu for choosing the right kernel to load.

How can I change this behaviour? How can I tell GRUB that I want to run the fifth revision of my kernel by default and not the older third revision? In general, how can I change the default entry line to match the kernel I want and not a seemingly random one picked by GRUB?

I also tried putting the following lines in /etc/default/grub:

This doesn't fix the problem the way I desire. But at least GRUB seems to remembers the latest kernel I booted from and automatically selects it from the submenu. It's just that I don't like to access the submenu.