Our Plus 6 is also in for a replacement Rad, it had the swirl pot fitted with the brake recall previously, but it was still on its original Rad. The car is a bit of sleeper and we have covered more milage this Autumn than it did over 2 years, so I believe we are just seeing the problems that should have showed up years ago. I have also been told the Rad going in is the latest variant.. Time will tell if this is the final fix.. I hope to hell Morgan cover the rads once the warranty expires ( in our case very soon ) as the Radiator saga does not yet seem completely over.