Hi. I am new to the Brewer's Best brewing, I've done the MrBeer thing quite a few times and loved it so I thought I'd step up to a bigger brew. I bought my equipment from a local liquor store and need to install my own spigots.......does anyone know how far up from the bottom is the recommended height to install? I know it's not critical, just looking for recommendations, as I don't know how much solids will accumulate at the bottom....