Anyone have experience with spreading the front deraileur cage of Shimano Ultra-9 triple to get some additional width to work over the entire gear range without cage rubbing on a 50-34 FSA Energy compact crankset driving a wide 11-32 rear sprocket with Shimano XTR rear derailleur?

I have no problem shifting over the full range, but the front derailleur cage rubs the chain despite carreful adjustment. I purchased the Ultra-9 triple front derailleur hoping that it would better handle the compact crankset and the wide rear gear range. Spreading the front deraileur cage seems like the logical next step. Anyone Been there...Done that?