Nikko Bobcat 99 Rc Buggy ?

Here I have an electric 4wd RC buggy, comes with a 27MHz controller and a NI-Cd 1600Mah battery. There is slight pull to one side when reversing, this could be the steering servo needs looking at, replacing batteries in the remote, steering arm could be bent, all of which are easy to check and replace. From what I know this a rare buggy, not even Nikko themselves know anything on this RC. It has had a custom paint job not long ago, green and purple pearlescent paint. Any other questions just ask, thanks.