I'm installing a bottom threshold seal, problem is that there is a 1.5" lip between the driveway and the garage so it won't lie flat when installed correctly. See profile, the blue outlined rectangle is where the lip is going into the garage.
I've searched but my Google-fu apparently isn't good enough. I'm thinking of slicing it right about where the profile is thickest and using the portion to the right of the cut. I.e. making the cut to trim off what would be inside the blue rectangle. And then putting a thick bead of adhesive on the back of the seal where it sits against the lip so there's no channel for the water to collect in.
Is this a sensible plan? Should I go with another product/solution altogether?