100 series clutch shudder

hi every one,
i have a 100 series 1hz diesl which until 2 days ago had terriable clutch shhudder
and has had it from the day i bouht it
after a clutch replacement under warranty it lasted about a week i had clutch kit and a new fly wheel under warranty and it drove me mad well iwill let you know that there is a solution to this problem and that is a safari tuff clutch by daiken best money i spent they at first choise clutch and brake at east maitland and carters clutch service also at maitland say that this is the answer to the problem