My fuel economy is utter butts. What can i do to improve it?

[helloindustries]

First week of January i'll be taking it in for a poke-about.

Will be:

• Checking plugs
  
• Checking choke/s
  
• Replacing air filter with a K&N
  
• Replacing oil and filter
  
• Checking state of carbs/clean
  
• Balancing said carbs
  
• Checking 02 levels.