Do use a straight edge when installing knobs and handles?
Just finished installing 25 cabinets for my kitchen remodel. All doors will have knobs. All drawers will have pulls. The location of some pieces will be determined by the type of cabinet. For instance, my trash pullout will have a pull positioned horizontally at the top center. But, most of the cabinets will have a hardware pattern that repeats along the run. I have a template for drilling holes, but I have a U-shaped layout in my kitchen and I'm concerned about achieving proper symmetry of the hardware as I go around the room. I've already adjusted all of the doors and drawer fronts. They aren't "ideal," but I've managed to minimize any gaps and unevenness.
These are Ikea cabinets that we installed ourselves. The house has some age on it, so we were constantly battling walls that aren't square and a floor that isn't level. I think we did pretty good considering we aren't professional installers. Nevertheless, I know the cabinets aren't perfect.
So, here's my dilemma: I'm wondering whether I should use the template alone to install the hardware, or if I should use a straight edge across the face of the cabinets to establish a level plane, making a light reference mark as I go, and then align the template to both the cabinet front and that line. I'm reasoning that a reference line will not only keep knobs level between adjacent doors, but adjacent cabinets as well.
Does that make sense? Am I over-thinking this? I'd appreciate your thoughts.