I have the compression latch and love it, mine seals up tight enough that I don't need a gasket. One thing that is not mentioned much with the compression latch is that the system protrudes so deep into the cooker that you really have to be careful when moving your water pan or bottom grate, these can catch on the latch.
Thanks Alan. I think I actually read your latch thread for the idea.
If you have the same latch I have, it is on page 6 of that PDF file and I think you are talking about the "cam retaining cup". It is on the most inside right between the nut and the cam.