i feel your pain i had a babylock that i had problems with from the start...we're talking $3500. on sale !!!! finally after a year of numerous times at the shop, many phone calls i got a new one !!!! yeah now knock wood it's great. don't give up on your fight. it's like one of your children and i KNOW you will fight to the end for one of them !!!! work your way up the ladder to the big boss.
GO GIRL !!!