Problem with my meffert's megaminx

[marcobelotti]

Hey guys, yesterday i changed meffert's megaminx springs to 3x3 springs, but some sides were very loose and when i change the regulation they did'nt hold them and after a few turns they were like before.
So I re-changed 3x3 springs to meffert's springs but the problem isn't solved and now i can't find a regulation.
Have you any ideas or tips to solve the problems?
Thanks, Marco