Are Magnepan MG-IIIa speakers problematic?

I was a Maggie dealer for 11 years, and sold several pairs of III's. They were NEVER problematic to me.
They are large, and with enough heat build up, you can misshape the ribbon tweeter.Plus the resistor, allows for audible phase shift, (to me), and my ear. It does, tame the high frequency enery. But that problem with the lessening of THD, and TIM over the last several years, the speakers seem much less a problem. So where was the problem, really, to begin with.
I will bet that with Halcro amps, they sound delicious.
Don't hesitate to buy them if you have room for them.
They are good speakers, worth owning. Plus, Magnepan, has ALWAYS backed their products.
Good luck,
Larry

Surf,
Check the ribbons for visual clues of misshaping. This would be due to thermal build up. That would mean, since the speakers ribbons had an expressed finite lifespan, that they may need replacing.
If they sound good, and have no visual damage, go for it.
They are wonderful.
As to placement, if you want to email me I will be glad to walk you through it.
I have set up about a 100000000 pairs of Maggies. HA!
Seriously, glad to help if you need it.
Larry