Photographing the moon isn't all about magnification. The light amount of light you can pull is in very important. I'm not sure trying to get 1/125 is really all that required at the magnification you guys are using. Photographing the moon at full moon also results in the least contrast and texture.
Here's a couple of scaled down shots from my old k100d with the 18-55mm at between 70x to 160x, click on the photo for the 100%. These haven't been retouched except for scalling them down:
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The last lunar eclipse:
These were all shot through a 10" telescope using afocal projecting from the eyepiece into an DA 18-55mm+k100d. The biggest problem I have is getting the focus right because it's very very thin, and that's a lot of equipment hanging off the telescope. I hope liveview with 8x magnification on my new k20d will help. Too bad the sun sets and moon doesn't rise till 11:30pm at the moment.