Re: John Bonham Style
Well you may want to increase your spring tension just a tad. I have a similar problem with The Immigrant Song, I start playing it too fast. The trick with this song is stamina. It's hard, really hard, to keep it going for more than a minute or two, at least in my experience.
It may be that you're using the pedal's resonance too much, by tightening it a tiny bit you may help prevent this. Alternatively, play it toe-heel like JB would have done.