Replacing blown head gaskets on my 2000 Legacy Outback Limited. Took the heads to my local machine shop. I had two options; plane the heads and call it good for about $200, or plane the heads and do a pressure check for $375. At first I went the cheap route and told the shop to just shave the heads. A friend convinced my I should "buy reassurance" and pay the $375 for the pressure check, which is what I did. Heads pressure checked ok. Machine shop estimated 1 in 8 Subaru heads fail the pressure check. Just wondering what most folks are opting to do...pressure check or not?