I broke two pullers, heat and smacks from a hammer while winding up the tension on the puller does the trick, be careful
i presume you can top these up? if so and it's not leaking bad enough to annoy you then you could just top it up periodicaly, or you could add some leak stop fluid and see if it helps, it might give you 12 months grace.
Good point. My Haynes is in the bus tucked away in the garage, when I pull it out the garage one day this week i'll read up on it