Thank GOD OMM posted this.
It's not that everyone needs the equipment - but the shop they use SHOULD have it if performance work is a part of their service. In the early 2000's my shop got their Rottler and it was night and day. The shop I now use has one too for the same reason.
The correct fixture allows for the actual distance from the true crank centerline to the deck surface. That is the only way to actually square deck - that's what the "square" part of the description is.
So if your shop doesn't have that, either use one that does, or if you can't ignore the worry and move on. Use the Felpro gasket and you'll be fine. Only MLS gaskets might leak. And that's a might.
