Same with 4/4 sport. I couldn't work out how to do it so I asked the mechanic at the local Morgan dealer. Get a flexible hose on the grease gun, rotate the propshaft until the nipple is vertical i.e. sticking up straight up, then with a bit of fiddling you can attach the hose to the nipple. That's why you need a flexible hose. I have used this procedure for the last 3 years.
Best of luck
Eddie
2009 4/4 sport
