SoxFan,

I think there's some subtle evidence that you may have a bridge tap on your line.  For your distance, the max rate seems to low and the upstream power level seems too high.  For 1900 feet, I would expect a 42 - 45 Mbps max rate.  Yours is only 37 Mbps.

Call tech support, have them send a premises tech, and have him check your line.  He may need to call the linesmen's group (I&R) to come and find the bridge tap.  If you do have a tap, your bitloading graph implies that it's very far away from your house, up near the start of the line.  If you have one and it gets removed, the max rate should come up by 5-6 Mbps, and then your 32/5 profile will run properly.

If they can't find a bridge tap and can't condition the line any further to improve the max rate, then you will have to have the line moved to the 25/2 profile to prevent the errors that are occurring.