I have a 14 month old blf that I am trainning using Mike Lardy's TRT. I am currently on the Double T. I have already taught the line and forced. Today I started Sit to the pile. I first started with a freebie then moved to a sit on her way in. First problem is she crept a little when I blew the whistle which I corrected the problem with a sit nick sit. The second problem is any time when she is out in the field and she sits she immediately drops the bumper but when called in immediately picks bumper up and races in. Do I need to go back to FF?