Greg,
Compression of 180-195 in a used waterboxer is really good.  Almost too good to be true.

I rarely see WBX's with that high of compression.

Are you sure your compression tester is accurate?

>
>The compression numbers were reasonable: 180 - 180 - 195 - 150. I
>suppose I could try wetting the rings on #4 to see if it comes up a bit,