You spelled "FUN" wrongTo re-cap my experience here.
I blind tested 88's 1911's not knowing which gun had the FLGR. After running a mag through each of them I stated the last one I shot had the rod as it was noticeably smoother. The re-coil on the MilSpec set up was just a tad heavier and noticeably so. Maybe this is due to all of my 1911's being fit with the FLGR and running one without was obvious. Maybe not. The FLGR equipped pieces just ran smoother. The other set up had a heavier re-coil. We did not swap springs.
When I swaped in the MilSpec set up to my custom gun it was obvious to me. 88 was not so sure. Like he said the diff was noticed by him hand cycling the slides.
In the slow mo vid I could see more muzzle rise and recoil effect on my arms with the MilSpec.
My take away is you get a smoother running gun with the FLGR. At least to me. In the end it is all how we perceive things.
We did this for .........."SCIENCE"