Have you tried to unbolt your sway bar links?
If you haven't, keep in mind you 'may' need longer brake lines, so test it out carefully before you go play. If they look like they are getting tight, STOP, and don't disconnect those sway bar links again until you get some longer front lines. With a 2.5" lift, you won't need rear lines.
Other than that, your shock's length may be preventing you from articulating out very far. Are you using the stock shocks, something that came with your lift, or something else? The best way, is to pre-measure what you need before you go buy shocks :) The ones that come with most kits aren't really long enough.
If you're having any trouble with 'stuffing' your fenders, check your bumpstops.