WF Trac forestry help

[silvrrubi592]

I downloaded the forest mod and a pack of tools and tractors. In the pack is a tractor, WF Trac, with the wood crane. I can make every part of the crane move, but the grabber won't spin and I can't open/close it (it's in the closed position now) Is there anyway to identify what keys (or key combos) were set for each movement by the creator?

I've had the same problem with some of the other implements as well, so if there's any way to identify one of them, I should be able to fix them all myself. Thanks.

[Helmax]

To get the grabber spin, try to click the middle mouse button. To open/close grabber, press right and left mouse button together and move mouse up and down.