i have had my LST for about 6 months now and have modded it out and done some major off roading with it. within this last month i have heard this sound that sounds like gears grinding i have checked the diffs and gone through and cleaned out the whole car. but still making this gear grinding sound..i have already replaced the 2 speed with the upgraded 2 speed gears. does anybody have any suggestions or know what the problem could be? it would be great help thanks,

sean