Hello,
for the 212 there was a mainrotor fix. If this is what you mean. But this file was only for the 212 and not the 412. I can provide you the File.
You could also use the RTMM and BWEP painting liveries for the Cerasim212 we provide. The fixed mainrotorfile is there included.
I have also the improved hovercontrol helicopter files created by Jordan Moore. Improved cg-files for the Cerasim 212 and 412 are included.
Write me a PM.