Terrance, I think you will need to search the deaths index when you next go to the IOM, to buy the cert. - I'm assuming the Radcliffe burials were in the Ramsey register, because I have the Maughold ones up until 1974 and no sign of your Radcliffes - unless their deaths were more recent than that. Ramsey is still a very difficult parish to research because of the few transcribed indexes.
Beatrice Maud FINNEY 24 years Registered under Burials Act 1881 W Alexander, buried Maughold 21 Dec 1961.

Sue