Why are you trying to get your attorney to pay for part of this mess? Did you misspeak there? Whether or not someone could successfully sue someone for any issue depends on the details of the issue. Therefore, the reasons for the delays and the details of your contract would be the major factors in determining whether or not you could be successfully sued for the delays. The attorney you consult (or should have consulted) will be able to best advise you there. Although again, you have closed on the deal which should make it more difficult for someone to sue.