Just a simple word of caution, Jaffa. I recommend that you follow the engine manufacturer's instructions on how much oil to put in the fuel, not the oil manufacturer's. Any recommendation of higher ratios than 25 to 1 petrol to oil is good for the environment and extends the life of the spark plug, but it is not good for the piston or rings, and perhaps the bearings. Personally I would think carefully before using less oil than 25 to 1, but of course your neighbours' air quality expectations are not a trivial matter. In the end I personally follow the engine manufacturer's instructions, especially if they say 25 to 1.
Remember, keep the air cleaner clean. Otherwise you'll find you waste your time tuning mixture, because you will then have to start again each time you service the air cleaner.
I'll look forward to your report when you have given it a workout.
