Has anyone taken apart a Quick Windlass?

[clubjack]

I have an older model Quick Windlass which stopped working. I'd love to have a look inside, but I can't take the thing apart.

It is the model that bolts onto two sides of a plank (motor and gearbox below and gypsey above), and I've removed four bolts that pass through the plank and hold the upper and lower bits together. Now I am driving in screwdrivers with a hammer to get the two halves to split, but they're not budging. Is there anything holding it together apart from those four bolts?

The diagrams I find on the web are of newer models only, this one can be about 10 to 15 yrs old. Any ideas?

[Splash Gordon]

You'll find that the thing's been stuck to the underside of the deck, most probably.
PM me for details.