Move the model to avoid other potential difficulty. Usually i can't spend time to investigate my problems but moving 0,0,0 has seemed to mess up my navigation. Rotating views is also important to me, this seems only possible at a distance. Once that is done exit cone of vision and save your view in the view palette. Make sure you are zoomed out before you set this up.
Cone of vision has for different views of the modeling enviroment.
Also In addition to the advice that you have already received, Try working with the Set View tool when navigating in perspective. Now you can move along the line of sight and you have a great deal of control. You can move in and out along the line of sight positioning the cusor accordingly. Now you can alter the view further with set view tool. There are many ways to do what I am describing in formZ. Find the one that works best for you.