autotech2612 '02 Corolla, manual trans.Last month, I noticed shifting to third was more "notchy" than usual. I can still get into gear, but I have to push a little harder.Neighbor came over, a backyard mechanic, and stated it could be a synchro. He also recommended draining out half my MT-90 and replacing it with one quart Synchromesh. (So, I have one quart Redline MT-90 and one quart Pennzoil Synchromesh)I did that. No change.I live in Michigan -- do I need to lubricate anything underneath?Shifting to other gears is great. There are also no noises.Thoughts, anyone? Has anyone else experienced this or is experiencing this?