So far to date every arf ive had, the compartment or support allowed the tank to be positioned level with the
engine.
With a 1/2 in of foam under the tank, it was still about a 1/2 in. too low.
I didnt realize it was that low until i had engine running issues.
Being this was my my first kit, i guess i just assumed the tank platform with a layer of foam would be correctly aligned
but it wasnt.
Other than that the instructions in this kit seems to be correct.
I also checked the instructions low and high rates with a throw meter and they are low 10-12% and high 16-18% which is dead on.
Any rate beyond what gp recomends would be strictly personal preference.