I use use the hs2000 sheets from pall and haven't had any issues. It looks like I'm lucky though, as it seems many brewers have run into this problem. As for my filter day, I filter about 6.5 bbl in 28 min (of actual filter time). I usually get the chance to condition my beer for at least two weeks prior to filtering and I slowly dump the yeast off of the bottom of my conicals every couple of days, so my yeast/protein load is quite diminished. By the end of almost all of my runs I still haven't picked up more than a 0.2-0.3 difference in bar. So i guess as long as the pall sheets are labeled properly the hs2000 should work efficiently. Hopefully this info will keep you hopeful that reasonable filter days are ahead. By the way...I noticed you're located in Milford, NH. I grew up there in the 1990's, it's good to here that some one opened up a brewery there. And I love the fact your marketing is so iconic to Milford. Nothing like hearing the volunteer fire siren all over town. Anyways, good luck.