On yesterday's ride my roadie wouldn't change into the small chain ring at the front, it wasn't really a problem as the ride was basically flat. So today I'm trying to fix the problem. It seems to be at the mech, basically I change at the levers, the cable goes slack but the front mech doesn't move. I've tried cleaning it, putting a bit of lube on. But no idea what to try now. Was hoping to do a long ride today, now thinking this is not likely to be on the cards.