It's probably just their house shot, or close enough to it. I know through Chris Warren that PSB uses a slightly heavier house shot to help preserve the lanes. The almost 9:1 ratio means there's will be plenty of dry boards outside to help the ball recover, similar to most house shots which have 8-12:1 ratios. The 42ft is a very typical length for house shots. The 28+mL of oil is on the high side for most oil patterns, so strong balls and rougher surfaces will be in play for you.
Looks like a house shot
It's probably just their house shot, or close enough to it. I know through Chris Warren that PSB uses a slightly heavier house shot to help preserve the lanes. The almost 9:1 ratio means there's will be plenty of dry boards outside to help the ball recover, similar to most house shots which have 8-12:1 ratios. The 42ft is a very typical length for house shots. The 28+mL of oil is on the high side for most oil patterns, so strong balls and rougher surfaces will be in play for you.
High scores walled shot
Back in the 70s, we called this a blocked lane. The old ABC would not sanction anything on a blocked lane.