Timmyr, do you recirculate much in the Boilermaker? I run a RIMS system, and my biggest struggle to date is the threat of stuck sparges. How does the Boilermaker work with constant high flow recirculation, if you do do that?
The only problem I have ever had is when my pump or Autosparge get finicky and I cannot keep the flow going. I do not remember the last time I had a stuck sparge of any kind. I use rice hull when I remember. I usually use a better than 3:1 water to grain ratio typically targeting 1.5-2.0 quarts/pound. Since I direct-fire my tun, I just have to be careful the pump does not have any issues when the flame is on.