I am building an oak table with 3/4" aprons and 11/2" by 11/2' square legs with the apron and legs set flush. I used 11/4" fine thread screws and normal settings on hole drilling in the apron. i got splits while driving the screws on 3 out of 4 legs. This happened on the screws nearest the leg end but my setback followed guidelines from Kreg. Any suggestions?