My wife's Fuji Newest 2.0's shifter for the RD gets stuck in the biggest cog. Sometime, a second or third click will release it....sometime another shift inward followed by a click will release it. The LBS cleaned it and checked it out. They seem to think the shifter is bad (sucks as the bike is only a season old). The LBS checked the cables and they're perfect....it's definitely the shifter. Any other ideas to look at before having to plunk down more $$ on this thing?