Error!!Error!!Problem located!!

I have just come across many errors such as that D.R.i.V.e was to heavy to move so to solve that, I turned the motors around and worked perfectly. Soon after, another problem occured which was that the bevel gear steering the sviwel kept tripping as in moving awway form the other gear there for not turning the sviwel. I have still not have found the solution to this problem. So if you have the answer please leave a comment. I just first have to say that i have so far 7 followers but I have not received any comments or reactions so please put some.