My Magnum drivers had a similar configuration - when I cut the casing open a bit earlier this evening. However, my leads were torn right at the edge of the mylar driver material. It was hard to see if two leads were there, and even with my magnifying glass, it was still hard to decipher. I then rolled up the edge of the driver to access the leads. I had my acetone prepared to remove the protective coating on the driver. However, due to the positioning of the tear in the leads, and the extreme super-duty adhesive that was used to secure the leads to the underside of the mylar driver material, I hit a dead end. I couldn't get those leads to release at all and using the soldering iron near the mylar would mean instant death to the driver.
Keep min mind, though, this is with the Magnum v. 3.5 driver, not an actual Grado driver. Grado might bond the leads a bit differently. Also, if the thread leads were still present outside of the mylar edge, life would be much better. I'm not going to move ahead with this because the mylar being lifted and bent a bit will never sound right if I were to get things running again.
Joe, Sadly, my Magnum v. 3.5 driver is currently resting in peace. A dead end in the repair process was hit and I can't proceed. The earlier recommendation of sending the headphones to Grado for the fix is seriously a good one. I've been there before. I just placed the liberated driver back into the black plastic sleeve, then put the cups back together. This was with my SR-225i. The cost was $35.00 about 2 years ago. The $35.00 included the repairs, materials as well as the shipping back to me. The process took only about a week. So, I was only responsible for about $5.00 to get the headphones to them, plus the $35.00 to apply the work and mail them back to me.
I had similar work done on my SR-325i. The cost was just a bit more. $45.00.
As to Keith and his discussion with Grado about the drivers. For the PS-1000, the $200 seems about right. I think the Grado RS1 runs about $150 to have the work done.
I did have an issue with my Alessandro MS1i headphones (another pair, not the pair I sold to Joe) and I was able to get Alessandro to send me a replacement driver. If it had been the MS-2 or the MS-Pro, they would have had to be shipped back in.
Ah ... the wonderful world of drivers. After working with a few drivers from other brands, I can clearly state that the Grado and Magnum drivers are a bit fragile. The solder tabs could be improved 100% over how they are configured right now. Sennheiser has a much better mount system with a green PCB and way better soldering tabs. I can't imagine the cost of the drivers running more than $5.00 or so per pair. Then again, Grado might have to perform a lot of work by testing and matching the drivers for their applications appropriately. Additionally, I can't imagine the Magnum drivers running more than $10.00 a pair to produce. Nothing against Turbulent Labs, but the profit margin on the drivers has got to be huge.
I wonder what the Chinese grey market is like for driver availability? It's funny we don't see more floating around. I'm sure they're out there.