As for leaks, it sounds like your inserts are repelling instead of absorbing. I would try prepping them more (wash in hot water, no detergent, dry, repeat several times). Be sure that you're not using much detergent when you are washing dirty dipes. It can really build up on them and keep them from absorbing. HTH!
Hmm maybe i'm not washing them hot enough? I have the microfibre inserts. I washed them once before use but then read somewhere that that wasn't enough so I washed them twice more. Each time I have used detergent though. My machine only does a pre-wash at 85f and I wasn't sure if that was cold enough so I do a cold wool program which is basically a stone cold soak, then a synthetic wash at 85f, is this hot enough? Then an extra rinse, then the inserts go in the dryer. Last time I washed the wet bag with them but I just noticed it says machine wash cold...what do they take to be cold? Stone cold or 85f? It would be crazy if I have to wash the wet bag separately. Best Bottoms website says to wash on 'warm or hot (not sanitary)', I really don't want to damage my shells!