I'm drawing a font in Fontographer, but processing it with FontLab. I have a
font metrics problem, and I am not sure what the right way to fix it is.

The problem is that the font is way too small compared to other fonts.
http://www.evertype.com/fonts/syllabics/Allatuq-sizes-14-14-14.pdf shows my font
(the middle one, Allatuq) alongside two others.
http://www.evertype.com/fonts/syllabics/Allatuq-sizes-14-18-14.pdf shows the
three again, but Allatuq is now set at 18 point.

How can I resize Allatuq correctly?