Sometimes my car won't go into reverse after it's been parked for a while. I have a feeling it's because the reverse gears are lined up perfectly tooth-to-tooth. If I put my car in neutral, leave my foot off the clutch, blip the gas, let the engine almost return to idle, press the clutch pedal, and try to move the shifter back into reverse, it will usually slide right in. It has pretty much done that since day one, so I assumed it was normal.
07 WRX (Albins 5MT + Blouch 20G)
Jorge Carrillo Tuned (365 whp/340 wtq)