that steel paper towel tube welded in vertically inside the spring - whats that all about?, it will catch the inside of the springs with any amount of L/R flex and make hella noise. go ahead and take it out now. were you intending that to be integrated into a bump stop?
do you understand that the spring will twist as it loads/unloads? thats why a cut is not necessarily a good idea. a properly made coil bucket is adjusted for the angle of a not flat coil end. if you want to keep a coil like that, make a ramped bottom to distribute the force. solidly pin the bottom so it wont spin and eventually dig into / though the mount. make it spin in the upper only. I think the lower buckets were originally like that. use limit, straps to control droop, not your shock length. Ive found that a center limit strap works better than one at each corner, as it controls center droop at high speed a bit better. also keeps the tires from grabbing and tearing it out. a coil sprung front will want to unload hard on a hillclimb too, so you dont want it dropping away like crazy. but a center strap at the right length will still allow for crazy flex