how tight is your puller ? i usualy have a 36" breaker bar with a bit of scaffold tube on the end of it and my 13 stone on the end of that , if that doesnt work then some decent skelps with a big copper mullet thru the starter hole turn a bit then more hammering . be carefull not to hammer the sh*t out of the flywheel if its going back on as it can be knocked out of balance giving clutch judder after its all put together