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DJ - are you sure you want to do that? Moving the secondary in relation to the focuser is going to also result in a shift between the secondary and primary... which you should not want.
Logic would state that you've replaced the focuser assembly with another - so any misalignment would more than likely be as a result of this exercise. Are you absolutely certain that the relationship between the focuser and the secondary's offset centre dot is still correct? The axial centre of the focuser should be pointing at a slightly-offset centre of the secondary - not the true centre. It will still work if it doesn't, but you may see an offset secondary (as you have). David Kriege's book explains it all if you have access to a copy.
Can you replace the new focuser with the original (accurately) and see if you get what you're used to in terms of cheshire alignment?
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