I agree with tc I've had trouble with SRD spray bottles with their .5 diamond spray also, I use a different source for the spray bottles I use for the mix of Isopropyl alcohol and Kremer CrOx pigment and have no trouble at all as long as I agitate the solution well first.
I have not used the SRD CrOx spray so I don't no if it differs any in viscosity from the mix that I use.
The alcohol evaporates and leaves the CrOx just where I want it, very accurate distribution IMO. YMMV!