I'm in the same boat..
I just returned from my suspension expert. I have the same issue, achieved 55mm lift in the front and 60mm in the rear, now as the front has sagged 25-30mm the front sits really low compared to the back even when heavily loaded. Rear has constant 150kg+ load and has not drooped at all.
Lift kit comprises: Ironman heavy duty front springs, Ironman 300kg rear leaves, Koni front struts, Koni rear shocks, camber offset front bushes, greaseable rear shackles and bushes.
Now at just 25mm lift in the front over prior to lifting vehicle with camber offset bushes he tells me we cant lift it anymore without putting camber out. At present readings were -0.2 on passengers side and +0.2 on drivers side, with all adjustment set at max.
I really want to get my front lift back up to close to 50mm - otherwise useless.
his suggestion for me to try and source a 15mm strut top spacer. Lovells have a heavier rate spring than ironman but he doesn't want to use that, not sure why. Does anyone know if the are strut spacer available as small as 15mm, 20mm max? I do believe fulcrum has a further offset bush in R&D atm in a vehicle in newcastle which seems to be going well which may help keep my camber in check with more lift.
Any suggestions or info would be great.
Thanks