Need help with Ultegra shifter
He Guy's really need your help
been away for 6 weeks on a work assignment and when I came back I found that one of my shifter looks like this. I life in a very tropical climate and close to the sea. I always try to take good care of my bikes wipe them down after every use and wash them regularly. Never ridden in the rain but on wet roads.
Can any one explain what's happen and how I can clean it your help is very much appreciated
Thanks and happy riding