I just finished installing the Honda Roof Racks from Bernardi (Part# 08L02-TGS-100). I bought the Yakima Timberline towers and the Jetstream crossbars and I'm ready to install them across the roof racks. My question is: How far the crossbars should be from each other? Also, where exactly should I installing across the roof racks? I will be using the bars to transport two kayaks with Malone folding Jaylow mounts for reference. I appreciate if anybody share their experiences with this type of system. Thank you!