Toyota Repair: clutch shudder 1st/rev when warm, clutch, flywheel

Question
I have a 1994 pup: clutch replaced at 130k and new clutch shuddered in 1st/rev when clutch was warm/hot or under load or hill.  Mechanic replaced clutch and again had the flywheel resurfaced, but it still does it: mechanic is baffled and I am mad.  

Answer
If this clutch shuddering was not here before the clutch was replaced then it makes sense that this was caused during the repair. I think they are using cheap clutch parts, the only thing I can recommend is to make them do the labor again and you get factory or equivalent quality clutch parts and have them intall them, they may also just have told you that the clutch was replaced again but used the same parts, I have no way of knowing but there is something wrong with the clutch that was used, possibly a defective pressure plate or disc.