who is running MRL (BAM) Lifters without lifter bore sleeves

Mine oil through the shafts too. The lifter bores on the R1 are pretty tall, the oil bands may uncover on an oem block though.
If you go back and view the photos of my block, and look closely, you can see that the bushings added have a taller height than stock.
I cannot even get the lifters in or out of the bores with the heads on because they are much taller.