Spark plug reading

Thanks TT, I'll put that on the list.
Rob what #'s? Plugs are NGK BPR6ES
Thanks all.
Pig rich and oil fouled. Install a new set of plugs and go make a wot run somewhere safe. Shut the engine down without a bunch of idle time, then pull a plug and have a look. Only then can you read fuel and timing.

I can't read them. The letters are too small.