lightweight m/c seal kit

Can anybody help (again), I am after a seal kit for a series 3 lightweight master cylinder. I have had 3 attempts at getting it from a land rover garage but they still have not got the right one. The cylinder is a dual line and has the reservoir held on by two screws at one end and a large jubilee clip at the other, its not the one held on by two roll pins.

Is a lightweight m/c different to an ordinary s3 m/c??

Hi, going off faded memory the SWB had a single system brakes, it sounds like a M cylinder from a LWB Dual system, if it has two outputs diagonal split. In the past I found a seal kit was always a short term answer unless you used a glaze buster and honed out the bore!!
A safer system though!!

It depends, the later s3 had a dual circuit braking system. Think it mught have been an option so not all of them have it.

I scrounged a replacement off a mates S3 and its different. The dual lines on his are different sizes and further apart, also the ones ive seen for sale on ebay have diagonal lines, mine are parallel.