I’ve pulled the tank and airbox off to investigate the poor starting on my MC22. Whilst I am in there what parts on the carbs as a minimum should I look to change to prevent problems in the future? From what I have read the carb. insulators go hard and crack so I should do those. I am going to check that the jetting is suitable for the current set-up using this guide - http://mootavic.olilolo.com/mods/tune.html What else? Are there any other seals/o-rings/gaskets etc. which have a history of problems? Thanks in advance.