Xjs v12 oil cooler leak

I HAVE A 1986 XJS V12 CABRIOLET WHICH ON MY LAST OUTING STARTED LEAVING PUDDLES OF OIL. I KNOW THE JOKE IS THAT 'IF THERE IS NO OIL UNDER IT- THERE'S NO OIL IN IT' BUT THERE WAS'NT ANY OIL IN IT !!!.SO SEVERAL EXPENSIVE LITRE BOTTLES OF OIL LATER AND A 70 MILE VERY SLOW DRIVE HOME I MANAGED TO TRACE WHERE I THOUGHT THE OIL WAS COMING FROM, THE JOINT BETWEEN ONE OF THE OIL COOLER PIPES AND THE ACTUAL OIL COOLER ITSELF. I AM ON MY SECOND COOLER AS THE ORIGIONAL WAS HOLED BY A STRAY STONE. ALTHOUGH I AM NO TRAINED MECHANIC I HAVE HAD THE ENGINE AND GEARBOX OUT AND REBUILT BOTH CYLINDER HEADS ETC DUE TO THE HEAD GASKETS BLOWING WHEN THE CAR WAS SUBJECTED TO A TOUR OF THE ALPS.

THE REASON FOR THIS POST IS TO ASK IF THERE IS ANY MOD OR ALTERNATIVE TO REPLACING THE COOLER AS HAVING READ UP IN SEVERAL PLACES THEY DO SEEM TO PROBLEMATIC AT BEST AS THERE IS A REACTION BETWEEN THE STEEL PIPE AND ALLOY COOLER CAUSING IT TO LEAK.( AT THIS STAGE I ASSUME THAT THIS IS THE CASE WITH MINE AS I AM STILL WORKING UP TO TAKING SPANNER IN HAND AND TACTLING THE JOB)

ANY ADVICE WOULD BE GLADLY RECEIVED.

(ITS PROBABLY GOING TO BE STOP MOANING AND GET ON WITH IT