Magnepan 3.7i vocals sound harsh

I don't have the resources to switch out pieces, I may try to borrow a friends amp.
Prior to the 3.7i I had 1.7i and 1.7 which sounded smooth. The 3.7i brings more of everything but the harshness in the vocals are aggravating.

Yes the stock resistors also tried solid copper wire.

Did more critical listening and the problem seems to be rock CD's and lp especially during chorus singing.  Even the new Chris Hillnan is awful( does any one else have this).Jazz, opera and all other types of vocals and music are great at any volume.
I'll try some different cables soon.

Just popped on CSN and the vocals sound wonderful now wondering if it has something to do wirh things done in digital.

No too loud probably about the 10 o'clock position

Talked to Wendell yesterday he suggested trying 2ohm resistors in the tweeters and maybe som diffusion.
If anyone in the Boston Ma southern NH or RI area has the same speakers and wants to do some mutual listening let me know.

Waiting to receive some 1.5 and 2 ohm resistors in the mail.
Also looking into possible amp replacement.

Purchased 1.5 and 2.0 resistors fron Magnepan arrived but when installed take all the life out of my listening. Gone is all the high end magic . I'll go back to just jumpers maybe try a different amp or more diffusion .

I did it spent above my means and bought a Pass 250.8 and XP 10 pre.
While the Parasound Hint was a great match with the 1.7i the sound wasn't the same with the 3.7i. The Pass takes control and is more musical in every aspect as it should be at 5X the cost.   There is still some grain in some 60's rock but I'm guessing this is just bad recording.

Hi Tim 
Yes I still hear harshness on some recordings this morning I had Elton John lp Madman on and it was almost unlistenable after I listened to a Patricia Barber cd Commotion and it was wonderful . I did not have the same problems with my 1.7 or 1.7i as I do with the 3.7i almost feel like going back to 1.7i or trying different speakers more in tune to my rock music.

Hi Tim
I have the preamp on at all times the amp is usually given at least 45 minutes to warm up.
I'll play that same lp over the weekend once I'm sure the amp is sufficiently warmed up and see what the sound is like. I also plan to take it to a friends to test on his system.
I was running with both 1 ohm resistors in place have just tried using only the tweeter resistor and 12 guage copper on the mid.

Went naked no resistors which I think sounds best(probably some high frequency loss at my age).
Let the equipment warm for an hour much improvement in sound.
Tried 3 lp's Charlie Byrd direct to disc truly incredible, Basie Jam# excellent, Elton Madman some improvement. I also tried EJ on a friends system yesterday and could hear some of the same distortion but not as pronounced.
Maybe it the price you pay moving up the food chain the good sound better and not so good recordings worse.

It's been awhile but I didn't want to leave my saga without an ending. Since moving to the Pass equipment and putting many more hours on the speakers they have settled in beautifully, I guess they just needed many hours of play to fully break in. Again thank you to all who offered help.