I've got an big old female coyote which I trapped earlier this year. She had a lot of fat and gristle (?) on her. I scraped off all the fat esay enough with my sheffield knife, but the tougher white tissue below is much more difficult to remove. I put the pelt in an acid/brine bath (pH 1) for 4 days, and then started scraping again to try to remove the tough white tissue. I scraped and scraped an area and ended up putting some cuts in the hide and scraping through to the hair roots in other areas. I just couldn't get the stuff off without ruining the hide. I decided to go ahead last night with the tan (Lutan). Is this normal? Should I just not worry about the white tissue... Is this the stuff that needs to be shaved after tanning? Am I using the wrong tool or method? Thanks.