Juddering.....

Hi folks, some advice needed please.
I have a P38 RR 2.5DSE with just under 70K on the clock and I have a question:
The RR appears to have what can only be described as a judder.
This occurs, when from standstill I engage ‘D’ and take my foot off the brake. I take the revs up the scale and the car moves off. If held at exactly 1000 rpm the car judders. If I take it slightly under the 1000 or just over, the judder stops….. If in stationary traffic or crawling along in a queue and the ‘D’ is engaged with tick-over revs moving the car, there is no juddering…..
I’ve enquired at my local LR garage and they state this is a peculiarity of the fly-by-wire system and quite normal.
Anybody able to confirm this or is something on the way out..????
Many thanks in advance.

Not come across this on my 2.5DSE. It will crawl in those conditions witout a problem.
I have a problem at about 2700 to 2900 rpm when accelrating, unless i floor the throtle it then the revs rise and fall between that range, and you can feel it surging. Not got the the bottom of that. LR say a simialr thing to me about it been the fly by wire.

Dave

Dave,
Many thanks for your reply - I'll keep an eye on it......
James