Need a little help regarding ceiling mounting my PJ. Here's the scenario; Distance from PJ to screen will be around 3.4m. The screen will give a 170cm wide image or thereabouts. The screen will be ceiling mounted (can't wall mount it in front of a window) and the top of the viewing area of the screen including the casing (6cm) and the border (45cm) will be 51cm from the ceiling. The ceiling mount I have (cheapy from eBay) will lower the centre of the lens of the PJ down to about 9cm from the ceiling. The PJ (Benq 5120) has an offset of about 34cm. So, 34cm plus 9cm is 43cm but as I aleady mentioned, the top of the viewing area of the screen will be approximately 51cm. What I need to know is how I get around the 8cm difference? Is it as simple as tilting the PJ forward and then using keystone to align the image? Or should I put a block of wood 8cm thick between the ceiling and the mount to make up the difference and avoid using keystone? The only thing that bothers me doing it this way is that it may be a tad unsightly (WAF). Any help appreciated.