Are these pads under Nand ok? Reball practise. Picture


Im practising reballing. I have 5c and i did lift the nand put back in restore and again. Second lift I noticed metal area exposed. The pads seem to be separated. Is this bad or its ok and will still work?(its a icloud board so i dont careif its damaged).

Cant upload to the forum for some reason here is the picture:

Also any tips on reball? Im using metal stencil having hard time to get all balls even.