Action cleaning suggestions ?

[birdawg]

I am in the process of cleaning up a A grade stock and action from a gun that has a good amount of case color but some is covered with old yellowed varnish. I would like to hear suggestions on how to remove the yellowed varnish from the action without compromising the remaining case color?
Thanks

[terc]

I've had good luck with acetone. It removes about anything and doesn't hurt the case colors.
Dave

[Mike of the Mountain]

I use an ultrasonic cleaner from Lyman. Might take a few 8 minute cycles but they work real slick.

[birdawg]

Thanks guys!