Blimey, I forgot I posted this post.
In reference to the above, adjusting the rear brake, it has made a huge difference. It is far easier to apply the brake since adjusting it and since doing the adjustment, I have had no problems with it. The rear caliper does seem to bind on the rear disc slightly, but I think all 1150 GS rear calipers bind a little.
Here's what I've done on my bike since getting it in February 03:
Y-piece fitted
Cat code plug (yellow) removed and throttle sensor reset ( several times now )
Techlusion 1030 fuel injection manager fitted ( settings for Techlusion are 3, 4, 5 ,8 )
Lamda probe taken out
1" Handlebar risers fitted
New gel seat
Malkys' wide tails fitted
Verns panniers fitted
TKC 80s' fitted
Halfords spotlights fitted
Throttle bodies balanced
Red line shockproof oil put in gearbox/final drive
Sheepskin seatcover
Rear mini mudguard removed
2 Extra accessory sockets fitted for heated clothing
Mini rear indicators
Clear indicator lenses and orange bulbs fitted to the front indicators
Removed the rubber from the footpegs
6000 mile service
And probably some other stuff that I've forgotten about...
The speedo is on 7000 miles and I'm still enjoying the bike more than ever. The only problem I've had so far, is that one of the jubilee clips attaching the plastic air intake tube to the metal throttle body came loose during a serious green laning session. The bike ran extremely "lumpy" and surged seriously until I figured out what was wrong. I tightened all the jubilee clips and hey presto - right as rain.
All in all I've owned about 43 bikes and this Adventure is definately in my top 2 bikes. I can see me keeping it for many years to come.