Breeding Netherlands

Breeding Netherlands is a challenging process.  Veterans are great.  They know what to do to get bred, they are normally receptive, the usually take, they take care of a litter.  First timers are tough.  Right now I'm working with 2 of my first timers and things aren't going so well.  Neither are being receptive. At all.  I thought I had them both bred before Christmas. First timers are harder to palpate because their stomach muscles are tighter.  I'm not the most experienced, so that is probably some of my problem.  Neither kindled.  I'm trying to get them bred. I've tried keeping them in the bucks cage for a few days to make them more receptive, and that didn't work.  I'll have to try some more tricks. (If you have any, please let me know)  The moral of this story is....DON"T GIVE UP!