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This is a bit late, but read the problems you are having with this. Not sure if you still have the scope but if you do there is a little trick I use to collimating these beauties. You can get reasonable images from it provided you dont go off axis too far. I am hoping it has the adjustable spider arms. Firstly remove the built in barlow from the inside end of the focus draw tube and try to collimate as per normal daylight collimating as best you can. Replace the built in barlow and prepare yourself for some tedious night time collimating. Forget about collimating on a star for the time being, use a planet like Jupiter, Saturn or Mars even a very distant light bulb might work. Keep the image centred and focused as best you can, you may notice considerable flaring. Working on the secondary mirror, adjust the centre axis (rotational) to reduce the amount of flaring. The centre position of the secondary now needs to be collimated, this is done by using the spider arm adjusters. You will notice as you pull the secondary from one side to the other the flaring will be drawn in or away from the main image, adjust so that the flaring is drawn in toward the main image, keep adjusting until most or all of the flaring is gone. Keep checking your focus and repeat as necessary. Now get yourself a reasonably bright star and perform a traditional collimation by very small adjustments on the primary mirror and possible the traditional three set screws on the secondary. Check back again on a planet and repeat the procedure again if necessary. I know it sounds like a lot of work and its not what you call a conventional collimation procedure, but it does work and you might be able to put the scope to some use. If you still have problems there may be a defect with it. Good luck.
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