Maybe someday the Kirkhams will address this. They've fixed everything they've put an o-ring on (
oil remote block, expansion tank, water neck,
oil pan).
My engine has only one very minor leak, at the driver side of the timing cover where there's a 3 piece joint, it collects on the forward flat face of the block). I fashioned a steel spring mounted to a bolt (like half of a money clip) and it holds a piece of pig mat folded twice, final dimentions about 2"x3". I change this every thousand miles and the pig mat isn't exactly soaked. No other leaks, drips, mist, etc. It's nice coming home after an hour drive, lifing the hood a smelling a bone dry engine (bone dry on the outside,
).