Come now ...its nothing that can't be finished with in half an hour....why would you say such a thing.
I personally like when my customers want to save some money by doing some of it themselves. It always....always...ends up costing more for me to fix the damage they have created or not finished than to let me be the professional and do it all myself...this is after I have to take my time to explain and let someone borrow a few tools.
Truth is most of the time I do not charge...unless its the customer from .....