@maxwestern,
Much thanks - good suggestions, will check those too on the weekend (have house guests the next few days).
I'm not sure if it's a terrible way to do it but I clean the sparkplugs every few months by removing them and hitting the electrode end with a butane gas torch for a few seconds. This seems to carbonise the impurities etc and makes them very easy to remove with a light rub with a wire brush.
Is this going to damage the spark plugs or is there a better way to clean them in between changes?
I removed the exhaust muffler/baffle box a few months ago and that seemed fine - no issues with it.
