I just surfed over to SR20DE.net and found some info on a common G20 malady called "fifth gear pop-out", where the lever won't stay in 5th gear.
Anyone have this happen to them? If so, would this problem damage the rest of the tranny, too? If not, I'll just have the shop fix the 5th gear & synchro and assume the remainder of the gearbox is fine.
Thanks again for any advice & feedback!!!! -Don