GSPWillie, check into argon gas to prevent skimming over and gumming. It comes in an aerosol can with "straws". Argon is heavier than oxygen, which causes the gelling, and seems to work well with my bottles of finish.
The can I'm using is called Air Gone Argon, and it's available on Amazon. I don't know how long a can will last, as it feels empty when it is full. When I close a bottle I put the straw into the bottle, under the nearly closed lid, and release a little into the bottle before capping it. So far it has worked well.
I despise thick lumps, or stringy pieces, in my finish.
