I've tryed dmt bbw/yellow I found the belgium blue did'nt remove the dmt scratch pattern as well as i'd like. I reverted back to the 4k 8k norton and i could see scrach pattern had reduced more so ,then i used bbw /yelow any one else found this when using 30k loop maybe with the method the sahve would of worked i just found my razor a little harsh after progressing from 1200 to 4k 8k then naturals the shave was smoother.