Lately I have been coating with a foam brush. 2 coats. VDB. Cranes kid finish white. I started out with a puddle pusher and just didn't like that technique. My last few prints have looked grainy, not smooth like before. They also have little tiny white dots on the print especially noticeable in the shadow areas. I have been using the same foam brush for awhile now. I do wash it out after each session. I am wondering if the roughness and white dots in the print are due to my coating technique, should I be using a new brush for each print? Is it due to overexposing the print? Is this a common problem with using foam brushes? Should I get a regular brush? Anybody have any ideas on this? If needed I could post the image.