Well I've changed the oil & filter 6 months ago & today I changed the plugs as starting was getting difficult & FCS on Sat & Sunday changing them made sense !
The 6 starts amazing now
Well I fitted NGK BKR6EZ & took out
Some strange looking & unknown plugs ?
NGK BKUR7ET with 3 ground Electrodes ????
Day666 has attached the following image: