Fixing drips on handrail
I've been working on finishing our stairs, rails, etc. for months now, and I can feel the end in sight finally. I finished the handrail with stain followed by 3 coats of Minwax semi-gloss oil poly. I thought I was being super careful, but ended up with drips on the vertical (its got some detail to the profile besides). I figure need to sand off the drips, but is there anything short of applying another regular coat of poly to restore the sheen after?
I've done some reading on rubbing the finish, but it sounds like that is not ideal for a semi-gloss poly. Can I use a wiping poly just to restore the semi-gloss shine? A friend told me he read something about polishing with steel wool and WD40, but I don't know about that. Any other advice (short of doing a better job next time...).