We do not assemble Balustrade sections. There is a good reason. We feel very strongly, as stated in our Finishing Instructions, that it is important to completely paint all surfaces of exterior trim with oil-based primer and multiple coats of quality oil-based paint. Wood's end grain absorbs moisture readily, so it is especially important that the bottom ends of Balusters be painted.
Therefore, we cannot assemble for you. Your results will be much better and longer lasting if you assemble your balustrade sections only after thoroughly painting all surfaces. Please follow our installation guidelines for best results.