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.......