lhi B T as you told you have white tiny spots on solid grounds , can you tell me about your dsign is solid have only one layer of ink or sporting color under the solid ground .if your machine is 2 color use 2nd impression to cover if it is 1 color reduce the tack of the ink . Use a little bit light shade with a little more ink to compencate the shade & try to use paper which have a good surface strength.