i have this myself, since i had the same, older, cutting LASIK procedure myself 13 years ago
like you, i had non-wavefront, because wavefront didn't exist back then, and a metal blade
however, it is not true that these symptoms are decreased by wavefront and using a laser to cut a flap, it is decreased by wavefront, the method by which you cut the flap really doesn't matter in terms of night glare, because it's cutting a flap and having a 2-piece cornea that is sandwiched together that contributes to night glare.
when light enters your cornea at night, it hits the flap interface, which never fully heals, and reflects and refracts across this interface, causing night glare
the noncutting LASEK and epiLASEK techniques don't cut a flap, so you don't have a 2-piece sandwiched cornea afterwards, so less night glare
i fix people like you every day at my center. what you need is a PreVue lens to show you how you would see after your WaveFront enhancement. i would do a noncutting LASEK on top of your old LASIK, as this is way safer than cutting a new flap or digging the old one up. your enhancement MUST be wavefront, btw, or it really won't help your symptoms much
hope this helps!