Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

I'm in the process of fitting astra gte dash into a Corsa b, I've done all of the moulding, and most of the wiring, but it doesn't seem to fit very well? I've cut all of the plastic behind, and removed the dash cover, but once the dash is in the cover and surround don't go back in? anybody got any pictures or do I have to cut the dash Aswell ?-.-

Get some pictures up to better explain it