I don't think so, but make darn sure you use 1.5" poles and heavy, large backing plates.
By now, if you've perused the CP project pages, you must have seen the other multiple projects where drilling holes ovesize, wetting wood core with epoxy, filling with thickened epoxy, and then drilling tap drill sized holes to fit the fasteners - is the order of the day.
Nothing less is desirable IMHO for such an item subject to such intense loading and movement [i.e., the base may not 'move per se, but it sure is subject to high loading!]