First up...a great site and very helpful.
Second..Thank God I didn't see this site before I bought my second hand 94 XT600E....amazing how many things can go wrong.
Third.....until recently I was really happy with my bike.

It has only done 34000 kilometres and most of the riding I've done is around town..usually with a three quarter full to full tank of Premium Unleaded petrol.
With that sort of riding it hasn't missed a beat BUT...
on the last 3 extended rides I have experienced the 'back firing' and surging symptoms referred to in many of the 114 pages of threads I've just read.
My problem may be different to others in that it tends to happen when I have travelled between 60 and 70 kilometres...and quite unsettling when the last two instances occurred at the exact same place...on a flat piece of road doing around 115-120 kmh.
I've started each ride with a full tank of petrol.
It has been suggested that it could be the 'strainer on the Reserve' and that it is blocking causing fuel blockages. It was suggested that short rides around town with a near full tank would see any sediment 'sloshed around' and not being a problem and that longer flat rides sees the strainer(filter?) blocking.
How would I check this?
Does it require me to remove the fuel tank?
If this isn't the case I'll have to go down the many paths cited in the threads I've referred to: perished inlet rubbers, kickstand safety switch, blocked petrol cap breather, float needle filer(?), etc.
Thanks for your help.
Mick