Hellwig 5905 sway bar install troubles 74 duster

It's been 6 years since I installed mine, but I've made a small write up on my site at the time with a pic;
Hellwig Swaybar

Maybe the K-member is tweaked a bit on your car?
To finish the job, I would probably add a .5" slab of aluminium under each mount and tighten it all up.