I have resently tore up my kitchen floor down to the joices and now I cant get it level.3/4 of the floor is level but I have one section that if I make it level with the rest of the floor it is about 1 1/2 inches higher than the dining room floor.The house is about 140 years old and I dont know what to do now.Can you please help me with this problem?I am using 3/4" osb board