I would recomend past parts in Bury St Edmunds Suffolk they rebuild fit new liners and seals... well worth talking to them

https://www.pastparts.co.uk/index.php?route=common/home


Morgans 1934 MX, 1947 Series 1, 1956 +4 TR4, 2000 +4 T16
Triumph Herald 1969 13/60
Morris 1970