Chancey,
If you can find some other jars to transfer the best of each to, then you have more room in each old bottle to add thinner to. If you can get the solids broken down, then you can mix the loosened up stuff with the thinner parts poured off earlier.
I've salvaged some pretty rough stuff before. It may not look as good as new, but it will be usable. Most dope needs to be thinned to use anyway. Somewhere between here, CEF , and RCG, (and/or possibly on facebook) I have a video of my DIY paint shaker that shakes the bottom, but hinges, or swings from just below the lid. This keeps the dope from pushing past the threads of the lid.
The unit is made to take the rotary motion of a drill, and convert it to reciprocation. The beauty is the speed control. An awful lot of dope can be restored slowly over time with this unit..