I have a little border terrier cross patterdale and he seems to have grown the BT winter coat. I think he is losing this as i have noticed some shorter patches developing. I'm sorely tempted to go in and rip clumps of hair out but im pretty sure thats not the way - does anyone know how to strip properly. I cant be bothered to get him done professionally, but i would do it myself if i could. Do i need a stripping comb or anything?