I recently installed a set of DR Sunbeams on my Excel (.045-.100, same gauge as it replaced) and within a day noticed some buzzing in several places on the neck. Different tension ? But I did the 'spring tuneup', nut, truss rods, bridge, and it disappeared.
Like Dave suggests, checkout Joey's post, take your time and follow the destructions and you'll be ok. And again as suggested check the frets.
Good luck
Gary