It sounds like you've already done the generally accepted steps to get your saddle in the correct position. It's a good starting point, now you just need to start tweaking it. As long as your knees and legs aren't hurting from that position I would concentrate on finding a comfortable saddle. That is the nemesis of bicycling. With a 120mm sitbone width I would try something in the 140 range (give or take). But again, a saddle is a personal thing and finding the right one can take some time.