I recently upgraded to an igloo 10 gallon cooler with a false bottom as my mash tun. I used to use a 5 gallon cooler with a bazooka tube. I've used my new cooler about 6 times with stuck mashes three or four times after having about three stuck mashes in 3 years of brewing all with my smaller cooler. Anyone have any suggestions on what I'm doing wrong? A few things to consider. I had a tear in the tube connecting the false bottom to the spigot. fixed that for my last brew...didn't help. I haven't been using adjuncts I have been adding all my sparge water at one time after mash out. then attempting to lauter (this is the next thing I will change. I used to batch sparge) Any suggestions would be appreciated.