The only gear I take to the track is a 48-15 or a 86 gear inch. I'm a Youth rider so am supposed to be limited to a 48-16 (under British Cycling), although I fail the roll-out every week, the organisers say that it's okay.
(Side note - the gear isn't holding me back in events, so it isn't big for me personally after I'm warmed up)

Thanks for the input, I'll start doing longer warm-ups and get myself a smaller chainring.
Would stretching (as in during the week, rather than part as my warm-up) help this? I'm often told how 'aggressive' my saddle to bar drop is, but I warm up on the tops or hold where the hoods would be...