This is one for you technical guys, but I need answers in 'Janet and John' terms please. Before my slight hicup in health in December I was having increasing problems changing gear up IE; coming down hill. I would change but was getting an increasing delay before it responded. Eventually it was on occasion taking so long I would try again only to have a double change resulting in a foot slip. I was able to ride home past Halfords and they happily checked it out on the spot and I had a smooth ride home. That was my last ride out until last week and I did a gentle 13 miles without a problem. My next ride was yesturday and did closer to 20 but working much harder and I have noticed that already it is starting to do it again. I am planning 2 final big rides this weekend before setting off for India and worry incase it gets worse. Should it be doing this so quickly after having been adjusted, and what can I do if it happens out in the middle of nowhere???