GSX250 head torque?

[tl_tub]

I almost have the engine back in the katana, so am now wondering what to torque the head to? Does anyone have specifications for the other gsx250 type bikes of a 1991 vintage?
The GSX250f (across) manual lists : cylinder head nut 15-19nm, bolt 8-12nm
Seems like a fairly simillar engine?

Thanks to anyone that may be able to help