The new door handle wants a larger hole, by 1/4 inch, than is on there. What to do? get a different door handle hoping for the right size hole, or , a new door???
Just for future reference for someone that may actually be in this situation.
You can get some types of holesaw arbor that will nest/stack within each other. You can then use the inner holesaw as the guide for the outer larger size.
Otherwise you could make up a jig/template, like say for example a simple one would be drill out a piece of scrap wood with the larger size hole and then clamp or temporarily fix it to the door. Then use this scrap piece as a guide.