we have an old house (probably pre-1850's) which we believe used to have built-in gutters. What would technically be considered our fascia has a curved profile and there is no soffit either. Being on the eastern coast of Canada we get a lot of rain and the excessive water is causing serious problems for the house. Any advice that is simpler (less costly) than creating and mounting blocks that mirror the profile on one side and and flat to establish a mounting surface on the other???