Main Motorcycle: 2010 Thunderbird
Join Date: May 2010
Location: Reno, NV
Wow, You pretty much hit the nail on the head as to what my speedo has been doing! On Saturday, the weather here in Reno was in the low 80's and mine starting sticking about half way to work! It started sticking just like you mentioned and at one point, started off at 80 mph and reached as high as 110 mph.
Once I arrived at work, I took a photo of it for my records parked and doing 80 mph. After turning off and then back on the ignition, it reset to 0. Later that night around 9:30pm, it cooled down into the 60's and worked fine the entire way home!
As for the build date, mine shows 11/09! This might also explain the grey tape under the tank. I posted a thread asking who else has this tape under there tank? I'm now guessing that the early builds had this tape and after many months of builds, Triumph probably felt it wasn't necessary and did away with the tape!
As mentioned before, I am going to wait until I hit my 500 miles before I take mine in for repair. Especially since I hardly ever look down at the speedo!
Please keep all of us posted as to what your dealer does to correct the problem.