Thanks gals,
I have only changed mates on 2 females in all my 8.5 years, and neither one bred with the new mate yet.
One was OK because it was my main standard pair that I split, and I have enough grays.
I put her with an older brown velvet must be 2 years ago and nothing.
I'm OK with that and they can both retired now with an opposite sex cage mate.
They get along great, just she would never let him, and he gave up trying.
Then about 6 months ago I put an ebony male with a standard female that had one litter a few years ago.
He keeps trying with all his chinnie abilities, but she seems to be quite good at backing that behind into a corner.
As they are both proven I'm guessing she just doesn't like him that way.
In considering what I want to breed next I now worry that the females will not take a new mate, as I do breed in pairs. They sure do seem to bond in this set up.
Maybe I'll try splitting up the ebony and standard for a few days, to see if absence makes the heart grow fonder.
Some say that might help.
I just didn't want to change partners if the chances were higher they wouldn't breed at all.
Oh my what to do.