Bad exhaust valve, refresh block. Comment was " this block is in great shape, You can still see the factory hone marks on it.". Wrong rings, bad install, doesn't matter my block was screwed up after they worked on it. They agreed to fix it but after cleaning the head again they didn't blow out oil galleries. Exhaust cam froze and ruined my front journal. I had to pay for new pistons for them to fix their mistake on the block. Did not trust it and did not drive it much, never out of town. Finally decided to try a long trip. Went through 2.5 GALLONS of oil in 2300 miles. Very frustrated when I got back. Finally decided to fix it. Compression on all cylinders was 130 psi. Tablespoon of oil jmped to 210 psi. Looking for a replacement mazdaspeed engine. Don't use Womacks!!