Hey guy's, I know alot of you guys don't like trex but the wife and i really like the looks of the Brasilia Cayenna.I just poured a patio and need to build steps,there only going to be 4 rise and six foot wide.My question is spacing for the stringers for the Brasilia series.I read the spacing for the stringers on the website and they said 9 inch centers does that seem right.Any help would be great before i buy it,Thanks.