I broke down and brought my car in, because the shaking was getting so bad I thought the tranny was gonna fall out.
Its in the shop right now, and they told me that the Pressure Plate on the Centerforce was bascially dissolved. The wire ring that has the centrifigual weights on it (centerforce only) was all screwed, and the 1/2 weights came off. Hence the shuddering. THey also said the plastic CLutch Quadrant/Adjuster was broken, so the ford "Auto adjusting Clutch" wasnt working anymore either.
The good news, the clutch was still under the 90 warranty - so free parts. The Quadrant is also being replaced with a Billit FRPP piece, so that will be fixed too.
The bad news, labor, plus the extra part needed will still cost me about a toal of 450 bucks.
Stay away from Centerforce, and everyone should replace thier Stock PLASTIC Quadrant with an alluminum one (~$100 for the kit).
"Ford, where quality is job one." <-- MY ASS!!