grinding when shifting into 3rd
So recently every time I shift into 3rd from second , it grinds. Ever since I had the car it always grinded when I put it in 5 but I always thought that was the due to the ****ty stock shifter. I was told if I got a short throw, it would solve the grinding of 5th. What about 3rd gear, is it a syncrro problem? What should I do.