I think the thread starter is talking about the
Paint Mixer, where there are 3 moving platforms to negotiate to get from one side to the other.
The
Lava in mints is easy, I don't even walk on platforms, i just wade through lava on left hand edge of platforms, watching other toons trying to miss hitting lava usually unsuccesfully
If you wade straight through lava without stopping (jumping at end of course

), u will lose one -8 laff hit, which is then restocked with barrel at end of lava, only time i try doing properly is if I need to make up laffs.
On negotiating
Paint Mixer, it is a hand eye cordination thing and lag doesn't help things if you get it in mints. As post above said, try jumping as platform is moving towards you, but not too early, hopefully the forward moementum of incoming platform will have you safely landing on the next platform, also you may be jumping from middle of platform you really need to a little closer to edge, in this case you may have try get close and take risk of falling a couple of times.
Above all don't panic, you don't have to be necessarily moving to perform jump it does make it easier have the momentum to jump, but until you get timing right move to edge close enough but without falling off, then jump and and press forwards at same holding jump + forward buttons until just about land on next platform, letting go early may leave your jump short, also watching the moving sequence of platforms a couple of times before attempting to jump to get the idea of where platform changes direction is good idea too.
I know it's difficult when toons are rushing ahead not to panic, but if you take a little more time most toons while wait paitiently and check back to see how your doing before they force forwards, just tell them to wait for you a little longer, using wait speedchat phases, concentrate on what your doing even if they trigger next set of cogs, try to get cross in your own time and let them worry about defeating the cogs
Ideally taking a few friends along is best idea, where you would hope they will understand you are training before hand, especially if they are True Friends and can chat freely.
If you really can't get it, you could also try glitching the wall, if you've glitched wall in sell factory or elsewhere you may be able to do it here. You may need to jump as well while doing glitch.
If you need details of this glitch and/or the one that allows you to pass the big gear room another complicated jumping sequence, please let me know and i'll PM you full details.
On finding out which mints contain Paint Mixer or not, use this guide
Mint Maps, the words for room you looking for are paint or paint/ink.
This will tell you mint lvls that have not got Paint Mixer, however to find out which mint lvl you are doing at time you need to be in the mint already.
'Keep it Kool

'
^This ones for matthew3447 who just loves to keep it cool 