Took off the heavy crud pretty quick but didn't do much to the stained tips of the main beam and the G3. Still, the right side looks better than it did. Now to tackle the really nasty left side.
Since the left side had a lot more black build up and green staining, I elected to use the scrub brush with a bunch of the clorox gel and zud powder together in a sort of paste. I didn't take a pic using the scrub brush but here is the left side fairly well scrubbed with both brush and scrubby sponge.
And here I'm just letting it sit with a bunch of cleaner all over the whole thing.
Lastly, for today anyway, here it is rinsed off. Not as clean as I want it but I'm gonna play around with some peroxide and straight bleach in the next few days to see how much I can whiten it. I might use sandpaper on the really bad places and then I'll try to even it out with some sort of stain because a normal rack is dark down near the skull and lightens up towards the tips but this one is whitened down near the bases and dark on some of the tips. Gonna try to "harmonize" the color a bit to make it look more natural.