All mouth work should cease 21 days before. Dog bites best at his ideal weight. First time we looked at machobuck, he was 70 pounds hog fat. His true weight was around 50. Well at 70, he couldn't bust a grape. We. Looked at him against a brother of awesome Buck. It went 10 minutes. He couldnt work. We shaved him down to 55, and he finished him in 8 minutes. Moses refused to believe itvwas the same dog. The rest is history... 18, 21, 28,31,1:27 (doa at 39)