1999 Subaru Forester • 75,000 miles

I own a Japanese market turbocharged Forester s/tb. I sent it to the mechanic to have the clutch and pressure plate replaced with ones I purchased in the USA using part numbers I got from Japan. The mechanic stated that when he replaced the two items the pedal was soft and he was not getting any clutch action. His diagnosis was that the clutch fork did not seem to be connecting with the teeth of the pressure plate. He then replaced the new pressure plate with the old one (using it with the new clutch) and stated that the clutch was now very stiff but was still not working. My questions are:

1. Is it possible for the clutch and pressure plate bought in the USA to be different from the Japanese market items even though they have the same part numbers?
2. If the clutch fork were incorrectly installed would it cause this problem
3. The mechanic thinks the clutch fork may be bent. Is this possible?

Any thoughts or ideas will be welcome
April 8, 2013.

I think you have the wrong clutch