[Crushellon (Tim)]

Hey guys.
I've decided to do a full spectrum mod on my 550D, And while I am fully confident in doing the mod myself I have come up to the point of removing the filters and am somewhat confused.. I was of the impression that I could simply remove the IR filter put the camera back together and be done with it. However from what I now gather, it would seem that I also have to remove the "Low pass filter 1" that is connected to the piezoelectric element and replace it with clear glass. Is this necessary? Can I just remove the IR filter and get a good result, or should I order some clear glass to replace the low pass filter 1? I would prefer to just remove the IR filter but if I'm not going to get the full benefit of filter removal I suppose I can wait for some clear glass.

Thanks in advance.

Edit: For clarification, I don't care about auto focus, this is a dedicated astro camera.