Guessing you cranked the preload to max? I haven't tried riding two up yet but as balanced as it seems with just me I think lots of added preload would be called for two up. I'm really impressed with mine on dirt roads, even deep sand is great. No rear abs and zero or 1 on Traction control. Full TC is awful on any loose surface or hardpack dirt, two bars is alright on hardpack but it kicks in frequently.