A few months ago my G11 left me stranded. With the down time I decided to pull and send off the Injectors while I searched for the electrical short that was the "quit running" problem. The short ended up being in the fuel tank (I think after a month of riding) and the newly cleaned Fuel Injectors make the GRiSO run better than it's ever run.
My 07 GRiSO has 48,000 miles and maybe every 30,000 or 8 years we should have our injectors cleaned.
Soon as I get the 2nd injector off my Lemans (one nasty injector screw is messed up) I'm sending them out to be cleaned.
If the Lemans runs markedly better then I'll know.......
Mark