Huge Espree fan here, love it love it love it!
Do you blow dry your girls? When you blow dry, do not touch their hair, it will keep it from curling up. It also helps if they're standing bc if they sit, that will cause their bum hairs to curl. As the hair gets longer, the curls will eventually straighten out naturally bc of the weight. There's not much you have to do when growing hair, just do the usu sanitary trims, trim around the paw pads, under paw pads, tip ears, pull ear hair if need be. Also trim the arm pit hairs & underbelly...these all can be done every 2-4 weeks.