James,
Re the sizing I suspect the problem is the web site is treating the document as an image rather than a document. If you can email the original file to me I will see what can be done to make the full size PDF available on this site.
pls email
webmaster@bristolcars.info
Thanks,
Kevin
PS. When you click on the thumbnail the site displays the image in a window at 60%, it you click the image in that window it will display the image in a separate browser window where it can be magnified up to 100% - 611 x 791 pixels - was this the original size?