Hmmmmmm 6 hours without the prtection of yeast????
I run out a pint of wort late in the mash, boil, cool & aerate, add to starter bottle, pitch into wort as soon as all wort is in the fermenter
The enzymes are not denatured as quick as all that, esp alpha. Viscosity is not changed that much by a few degrees difference.
Mashout I don't bother with, except sometimes a decoct to mash out to get some noce melanoidins
I think the slits are too small.
At the full mash demo at the 'Monk last Saturday the students had to construct a braided hose manifold. Run off was so clear no need to recirculate but was very slow. Tom is gonna have a much longer manifold for the lesson on thje 27th of this month
Troob
I receivd plenty bad advice. Then I found the brewshop at Unley, well, brewed a Scotch Ale (Old Jockstrap) OG 1074 an used a liquid yeast.
Find a good brwshop, I reckon
Andrew