Certainly has been quiet! I've been overseas for a bit over a month and come back to have a look and... not much! Everyone must be enjoying the good weather (I've heard about).
Jacko - a short solution for you may be the airbags? Apparently with those you can get an engineer to put your GVM up by 180kg's. Give's you a little more wiggle room but also should stop that sag happening. The facebook post had a dude in QLD getting the upgrade, and I've since found out there's an Engineer in ACT who'll do the same. Unsure where 180kg comes from - perhaps axle weight tolerances, wheels or similar - but all of them do 180Kg... possibly a short term for you? I've only clocked 17,000-odd now, but that's with 6 weeks off!
The Rotopax I saw when overseas with other countries using them. They are very expensive, but the most durable things you can find on the market. Any google of Rotopax will come up with what I have - I've got 2 x 4-gallon (15 litre) tanks mounted with a Front Runner bracket to the roof. I figure 170L is all I will need and if I ever need more, will just add Rotopax systems.
I'm surprised you've definitely hit the bump stops - you have a Rhino don't you? so less weight than mine by around 25kg's or so (although from memory you have a winch, so that likely negates it). Maybe I have and just haven't noticed, or you're doing much harder roads than I! I might go out and mark them with some chalk and see what happens next week I'm in Bendethra.
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1nando - Absolutely. I would just like it returned to stock height but that's not an option dammit. I went for a 30mm lift on the Prado for the same reason - didn't want a lift, just needed added stiffness at the front. And even then that caused issues with Toyota and any warranty (got a letter after a couple of DPFs stating that any driveline claims from the engine back wouldn't be covered due to a permanent lift).