Here is a starting point for the new shocks on the x11 working both on flat grass and Eden Park Raceway (high bite astroturf and multi surface track) as well

Front

springs blue (no compression spring) 5 1/2 turn in older style
oil 25wt losi
piston kit with standard rebound valve
pushrod above rocker
pushrod lenth 33mm with shockball undone 1turn
revised front arms with 1 washer behind wishbone
cone washer replaced with 4 losi gold ballstud washers. 2 under outer ball with 2 above
extra midde hole drilled for roll bar
roll bar 1.2mm (standard) middle hole
ride height 19-20 mm
front wing kit with standard lines followed
slight toe out with 2 degrees of camber

Rear

springs blue (no compression spring) 5 1/2 turn in older style
oil 30-32.5 losi (depending on jumps)
piston kit
lower hole on shock mount
roll bar 1.2mm again in middle hole in lowered position (pic to follow)
wheelbase lenthened 1mm
ride height 22mm
1.5mm rear block (reduces on power steering)
large rear wing with full guerney
toe in to middle of front wheel
rear uprite in upper hole

shumacher yellow minispikes with outside outer row cutoff rear and 2 inner and outer cut off front