Just had mine fail after 2 years and 20k miles. At first it became extremely difficult to get into gear. I could tell the clutch wasn't fully disengaging when the pedal was depressed. That lasted for about a week until one night the TOB began absolutely screaming. I parked the car and ordered up a new Luk TOB thinking the originally installed one may have been the FTE unit. Pulled trans out and sure enough, I found the FTE unit completely separated into 3 pieces on the input shaft.
The clutch itself, without complete disassembly didn't appear to have any issues. In with the Luk TOB and trans goes back in. Guess what...same TOB screaming issue.
Trans comes back out and I remove clutch to inspect. Very surprised to see a couple serious issues. First, the two intermediates plate had completely seized up on the guide pin. See the left two guide pins with the clutch in the released position with the pin on the right still in the compressed position.
No wonder the TOB destroyed itself. It was applying pressure unevenly on the pressure plate which also explains why I couldn't get into gear. Diving a little deeper, I inspect the problem guide pin to see that the spacer washers had begun eating into the pin material causing the hang up.
Some serious wrenching on it with a pry bar and I was able to get the clutch to release. During the inspection of friction disks, I identify failure point #2. The rear friction disk hub spline had been 2/3 eaten away by the end of the trans input shaft. The disk itself, due to poor design, was never 100% engaging the input shaft spline. When the clutch is released, the disk is sliding even further if not completely off the input shaft causing its own destruction.
Thank goodness the input shaft itself was relatively unscathed otherwise I'd be raising some serious hell. I provided all of this information to DKM support with no expectation of any response. Fortunately they did respond and asked that I send them the clutch for inspection although it is out of warranty at this point. Given how big of a disaster the install of this clutch was initially with 4 trans removals by the installing shop and incorrect parts sent with kit, they did cover under warranty. They also admitted that the FTE has since been replaced as we know and they have also redesigned the rear friction disk hub due to the issue being reported by not only myself.
At any rate, I will not being putting a DKM product back in my car. It has caused way too many headaches. Poor materials, wrong parts, bad design etc. I elected to go with an Xclutch and have been very happy with it thus far. Fingers crossed it lasts longer than 20k like the last 2 clutches.
Dang man sorry about your issues. This isn't really what i wanted to see right after installing mine.