PC " Coilover Rebuild Help

2013 DC 6" Pro Comp kit-
Has anyone replaced (PC 626000/ MX 2.75) coils to a stiffer coil. I added Stealth Road Armor bumper with winch- roughly 200+ extra lbs added. I had to really compress the coil to maintain lift. Have pro comp UCA but alignment still not right and I'm maxed out out both ways to align. Need some help first what exact coil do I use and who makes it to fit PC MX2.75? Should I replace UCA with adjustable Icon UCA ? Thank you for help-
can't even find rating on PC coil because they don't give that info out- that's coming from PC tech support-shady

 

Yea they are shady ass hell they didn't even want to sell me a coil retainer because i couldnt find my receipt