printing - QGIS 2.2 Openlayers Plugin shift between shapefile and base layer for large format

I am attempting to create a 24x36 map of New York City, and overlay it with a shapefile from City Planning. I'm using the Openlayers plugin, and I've tried all of the different types of base street map layers. I have been able to successfully convert the shapefile from a NAD 83 projection (EPSG 2263) to a WGS 84 projection (EPSG 3857), but I'm still suffering from some type of shift whenever I draw the map out on the print composer on a large scale piece of paper. The larger I try to print, the more dramatic the shift the misalignment.