I know at one point crysler made them where they could be. when you installed it did you notice if one hole was elongated.(the one that goes toward the top) if not just loosen the bolts a little and see if you can shift it a little.I can't remember if it requires 1/8 or 1/4 inch space, but im leaning to 1/4. just play with it a bit and see what happens.
Also have your o2 sensor checked that can cause it to run crappy.

out of all the jeeps in this town the d**n gremlin had to invade mine

I've done so much,with so little for so long i can practicly do anything with nothing