My 10% resolving gel seemed to be ~80% set (gel recipe: 30% 29:1 acrylamide-bis, 1.5M Tris-HCl pH8.8, 10% SDS, 10% APS and 12ul TEMED).
The reason I say 80% set is because when I tried to dry off the H2O which I use as a polymerisation density indicator ontop of the polyacrylamide mix, the top bits seems to stick to my paper towel/ However the gel is no longer runny as when I first poured it.
When I poured the 5% stacking gel, it set perfectly. I used the same stocks for both resolving and stacking gels just that the stacking gel has 0.5M Tris-HCl pH 6.8 instead of 1.5M Tris-HCl pH8.8. Could the Tris be the problem??