You could do with a good independent land rover specialist as these are quite complex without the right diagnostic kit and you can make things worse by not following some of the simple procedures but they are pretty robust i have found.
if you have a few spanners we can help you, the rave manuals are excellent to read through even if you don't intend to attempt surgery.
I have been taking things apart since I was about 5 years old when i stripped down our record player according to my mum but it took me until I bought a range rover to learn the benefits of making a note of how you took it apart so you could put it back together.
The record player never went again but i do recall removing all the door handles from our house as i had found a screwdriver and when my mum's friend asked me why i told her that i loved screwing..
So let that be a lesson for you, if you are 45, drunk and find a screwdriver, don't think that removing all the door handles to prevent your mum's church group from leaving is a good thing to do and neither is telling them you love screwing - that will only make things worse for you in court.
Welcome to Landyzone by the way