Well my opinion is that if there is really a need to rectify the problem, then just go ahead, cause at the end of the day, the owner should not just go through the defect list itself, but the whole house to make sure there is no missed out defects or like what Just said, you will get more defects alone the way.
This is the very reason why my house took 2 months (even though the Ah Xiang and gang are very prompt to rectify the problems).
Cheers