Can't get SD on TFT shield to work

I'm having trouble getting the SD to work on my ColdTears TFT shield v1.14. I normally use a micro in the Ethernet shield OK but things don't stack up too elegantly with that so I am planning to use a separate ethernet module and the new slot.

I am using the standard CardInfo programme as found in the Examples

I understand the SD is enabled by default, no fiddling with jumpers required.

I am using the same micro card I normally use in an SD adapter. It appears to seat OK.

While I recognise that pin 53 is normally unused but just set for output when using the Ethernet shield, I am also calling it for the chip select. Is that the right procedure?