Hi Folks. I have a 1999 tiptronic Subaru Legacy GT with 85k on it. The problem is that it cant shift/engage into the fifth gear. All the other gears are okay, it shifts well without any problem except the last gear. I have checked the transmission oil, both viscosity and level seem to be just fine. What could be the problem and how can I resolve it? PLEASE HELP ME

. I will be very grateful, thanks