Printer Profile Issue

I've tried both Onyx and Xrite i1 Profiler to profile an Epson solvent printer. The profile comes out fine as far as tone and gray. The Delta E's for Reds and Magentas are over six. I also tried more sampling with the Isis spectro. The results are still the same with either profiling application. The only solution I can come up with is to purchase a profile editor. The EFI editor is a bit expensive and comes with a profile maker which I do not need. Does anyone have another possible solution to this? Randy ZauchaManaged Color