I found this site about Austin Americas (an american Morris 1100) anyway it has instructions on how a repair can be performed if the hose connecting to the hydrolastic displacer begins leaking or breaks, so I was thinking if a 1100 displacer can be repaired then a mini one can be repaired too.

Anyway here is the link:

http://members.tripod.com/austin_america/id63.html scroll down until you see it.

The site has some good technical hints too.

There are also some letters that the website owner has written and got replies from Alex Moulton the designer of mini (and 1100) suspension (for those who didn't know).

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Roads need more corners
A Deluxe(CG13DE), 2 Clubbies(998 and 1275) and 2 Morris 1100Ss

Yes, I've been told by Todd you can fix Mini displacer hoses the same way. As long as that's all it is.....

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.