I ended up taking the m416 to a place called Jim Campen Trailers, in south Asheville/Hendersonville, and they were very helpful and removed the old ones and installed the new springs for me. Myself not having air tools would have been quickly and easily frustrated in attempting to do the work myself. They did it in 2.25 hours and it only cost me $146.00. It would have taken me all day to do with my limited tools and knowledge? Now i know how to do it as I watched and helped their guy fix it.
BIG NOTE: On the right/passengers side rear lower shackle bolt, it loosens RIGHTY-LOOSEY.
On the left/drivers side the rear lower shackle bolt, it loosens LEFTY-LOOSEY.
I was able to utilize all the original parts minus the new brass bushings and of course new springs. On the right side on the inside of the shackle bolt there is a grease fitting (?) washer that was partially fried, but since they had nothing to replace it with we just put it back and I'll replace it later when I get the part. It's been running without much grease for god knows how long anyway and it's not like its a spinning piece that gets lots of friction. I'll address it soon though.
They also happened to have on hand a spinning pintle hitch for only $85!!! a total steal, which I then drilled a hole in my raised hitch mount after having removed the static one and bolted in the new one. Awesome!