Great news on the cats mate!

Sounds like you have quite the zoo going on there lol. Nice one.
From what I've seen and read, you definitley got a great deal! Mine wasn't bad I agree, but when you're not 100% sure what you'e getting, then it's always a gamble. As I shall explain below lol.
As for the radio, you're right, it's definitley what you are used to. I had to bin that trigger setup asap. I was amazed at the lack of 3 ch 2.4 ghz stick options out there mind.

I can highly recommend this one though. Can't be robbed for £70 for tx and rx delivered.
Ok, i've fixed the steering. I had a look at the Baja this afternoon, to reset the servo horn. That made no difference, so I looked a little deeper and found the issue.
The plastic things (B048 and B051 in manual I think) where the track rod ends and part of the front bulkhead (B109) attach had dislocated from the bulkhead/bearing area. This is due to the front end being shaped like a banana! I guess you really shouldn't jump them too hard lol. Oh well, I'm learning.
I stripped it down and as you can see, the top plate (A003) was fairly bent. So was the unbraced flat section of the chassis that is directly beneath it. I was unsure at the time what shape this was meant to be. It is not 100% flat now, but after looking in the manual I see it should be.
I am not impressed with how feeble this is tbh! I remember seeing a thread on here where the OP said he bent his chassis easily, and people said it wasn't very likely. Well here's another one.
Whilst stripping it down, I noticed that a part was broken (B051 I think). Please see the pictures, as I need a new one of these now. Where is best, and what is the part name?
The previous owner has performed a worthy bodge - but still could have told me - he has forced the screw from the track rod end in higher up the arm, and wound the track rod out to compensate and reallign the wheels. This also explains why when I lost a wheel, I only had one bearing in that upright. Bell end!
What I don't understand, is how he managed to smack it reasonably hard and not mark the car at all. Like I say, it was like new still.
fiddlestick it, it's OK now, and will be spot on with a new part, as the wheels aren't bang on straight, and can't be atm. Although it still drives true enough. I will keep an eye out for a better steering servo bargain I think though.
I took the opportunity to make a paper template of the top alloy plate, with the view to having a steel one cut out at work. I reckon this will toughen the front end up considerably.
Have some poopy pics:

Whoops!
Looked Ok to me here...

It's not though.

Hopefully a steel on of these will make it more like I hoped it would be.
Thanks again for all of the advice and ideas everyone. If anyone has the part I need, or can tell me where to get it from I would appreciate it!
Liam.