I really like the cleanout on moly's but not for cleaning it out. It's a great place to stuff an Exact torch into the furnace when you are bringing the pot up to temp and Moly's are really bad for heat stratification from top to bottom. I measured the furnace in Eugene which had a 34" and it was 1100F at the lip while it was 500 F at the foot. Mine gives the same readings and that is very hard on the pot to be kind about it. The cleanout offers the only way to balance the temps short of dropping elements way below glass line.
Where are we going and why am I in this basket?