Update...

Moving along, after the last round of weathering using the black gel pen ink I realized I had gone a little overboard and it was a little darker and dirtier than I wanted so, to tone it down and clean it up a bit, I went back in with some of the hull color over the top of the weathering. I had to mix up a new batch of paint though as I had used up the original hull color mix. After some experimentation and mixing of ModelMaster with ACE Shady Cove I was abe to make up a new batch that blended with the original hull color so closely I was amazed at myself. Anyway, I chose not to airbrush it though as I have better control with a brush and I'm very good with a brush. Using a fairly wide, stiff, wedge-shaped brush I dry-brushed the dorsal, secondary hull, pylons, and nacelles. Took about 2 hours but she turned out very nice, much  more interesting textures than you'd get with a single shade of unweathered grey.

Here are the final weathered pics. I suppose you coudl say this is the Grey Lady at the end of her last 5 year mission:

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IMG_5011 by trekriffic, on Flickr

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IMG_5010 by trekriffic, on Flickr

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IMG_5008 by trekriffic, on Flickr

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IMG_5004 by trekriffic, on Flickr

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IMG_5002 by trekriffic, on Flickr

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IMG_5001 by trekriffic, on Flickr

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IMG_5000 by trekriffic, on Flickr

Her finish is extremely flat right now but, unless I'm mistaken, the Orbital Drydock paint masks I'm ordering adhere best to a glossy surface so I have a can of Glosscote standing by. Will need a glossy finish anyway for the decals that I will be using. The masks will allow me to paint the pennants and ships registry lettering  rather than using decals. So I won't have to deal with any issues with decal film silvering.

Have I said this before?  I LOVE THIS SHIP!!!