Ah wicked - dont suppose you know what engine the seals came off that you used? Just any L series?

Also, I plan on running the positive seal type on the inlet and umbrella on the exhaust. Umbrella on the exhaust will lubricate better and thus transmit heat out of the ex. valve better.

Now if the engine burns oil on idle, is that common of umbrella seals OR does that mean my valve guides are worn out?