Share 'How to slove cracking problem of chocolate'

Dear friends, when I use cocoa butter replacer(CBR) to coat the wafer but the coating is cracking .Who can help me to slove cracking problem.The SFC of the CBR is 87% at 10℃,68% at 20℃,33.5% at 30℃,18% at 35℃,3% at 40℃.The coating temperature at 45℃ by hand. Then the coated wafer was sent to cooling tunnel which the temperatures at 10℃. The ingredients is sugar, cocoa powder, skimmed milk power,…