My calico isn't a biter.  My B&W tuxedo is, but not the calico.

Cathy

...>  I will try some of your suggestions but am wondering if this is a

My childhood cat was a calico, and I climbed trees with her , dressed her in
doll clothes and wheeled her around in a doll buggy, and a lot of other
stuff.  She took in all in good humor and never bit or complained.  When I
was 14, my parents moved our family from a semi-rural area in Oregon to
Southern California.  I had to leave my cat behind because my mother would
only allow outdoors pets, and the cat would be better off in Oregon than in
California.  The neighbor who took her told met that that cat was the best
pet they'd have.  The neighbor's kids dressed the cat in doll clothes and
did all the same things I'd done when I was younger.  The cat never bit any
of them, either.
As an adult, I adopted another calico.  She was the sweetest cat you could
imagine.  She insisted on sitting on my lap each evening so that I could
groom her.  If I forgot or got busy, she'd come and get me.  I could clip
her nails, rub her belly, anything.  When she developed a liver problem, I
took her to the vet for an ultrasound.  She purred when they shaved her
belly, did not complain about the gel, and lay without a struggle the whole
time during the ultrasound.  She got lots of compliments from the medical
people.
Annie

Our calico is the meekest, most affectionate, most tender cat ever. Not
at all a biter.