I bought a T adapter heaps shorter (to clear the LX90 forks with my camera) than yours from scopestuff, Baader make an even shorter one than the one I have. I seem to remember reading that the 6.3 FR needs a certain distance extension between it and the camera for correct operation (perhaps for 35mm only). I know Peter in hobart successfully uses the much shorter baader with the 300d. There's an image of the 6.3 FR, baader T adapter and 300D on
his site. I have heard of people using the Meade reducer on the ED80 so it can't be that difficult.