Tyson Chandler so far is shooting 100 percent on jump shots during preseason — 2-for-2 in the two games he has played. The Knicks center said he has Carmelo Anthony helping him as he tries to reinvent himself as more of a jump-shooting center. “It’s all fun’’ Chandler said. “I talk to Melo about certain things have him watching me out there and obviously the entire coaching staff including [assistant general manager] Allan Houston. As long as I’m in the game I want to get better.” Chandler said he has tried to “implement’’ anything Anthony has told him.