I love Zaghloul and use it a lot. It's great when cut 50/50 with H-H's cavendish.
I'll have article about this up at hookah life with a lot of very specific info about how to get the most out of old fashioned mu'essel which is a real delightful combination of flavours for the thoughtful smoker. DO NOT PUT THE COAL DIRECTLY ON THE MU'ESSEL! Basically, the packing on Nakhla is not that great so what you need to do is set aside enough to fill your bowl, wet your fingers with water and add 1/4 teaspoon of glycerine for a small, typical ceramic bowl and half a teaspoon for a small funnel with a scalli mod and mix it very well.
The more detailed stuff i'll talk about latter but do that and then get back to me and see how it works for you.