No, when i meant tweaking, i meant playing with the valve, cleaning foam, opening the maxijet and shoot water directly from the faucet when i remove the impeller...just a good cleaning. The little plastic cylinder under the foam is loose also..helps making bubbles in the skimmer.
I will eventually do one of these mods :
http://reefcentral.com/diy/seaclone_modifications.htm ( what u requested i think ..CTRL + D to bookmark *BOUNCINGS ) when i know i have money for a better skimmer or already bought another.
The only real problem with the seaclone ( besides cleaning ) is the water level. In a well done sump the seaclone IS reliable and great, 'cause the water level is always the same.
The design of the seaclone was butched ( <- don't know if it's a word..i'm still practicing my english ) but if you have the chance to have a sump...get it in.