What would you do?

The first time, he said it had less power than the stock 2 barrel 318s he's owned. So, he took it to another shop and they upped the compression. It worked a little better, but smoked and leaked oil. He still thought the stock 2 barrel 318s worked better, though. So, I'm the fixer........again.

OH, well that's different then.
Now it's up to you to fix this smoker?
Hope you are making good money on this, and his "butt dyno" don't mean squat as long as nothing is wrong with the motor and unless there was a HP goal set in advance that wasn't reached.
Speaking purely from an ex auto business owner point of view of course.:D