Tenacity in Z Spray?

[gqnine44]

Anyone had experience running Tenacity in a Z-Spray? As of now I am planning on running the gray tips due to the fact that Tenacity is supposed to go down with at least 30 gallons of water per acre (5-8oz per acre in at least 30 gallons of water).

If I go at the heavy rate of 8oz that is about .1818oz per K. The gray tips at 5mph and 30 psi put down .71gal per 1k. So if I mix the Tenacity at .25oz per gallon of water (1.4 times the normal rate) or 3.75oz per 15gallon tank would that be correct?

Is this math right? I am confusing myself. I am used to just mixing stuff at double or triple the 1k rate. Not used to dealing with this volume of water and oz per acre.

Anyone used it in Z and if so what rate and what results?