<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div id="yui_3_16_0_ym19_1_1469110001212_8736" dir="ltr">I stumbled onto a great method for fitting my conical seat to the port. I started out by drawing lines on the seat with soap stone then pressing the port into the seat. The high spots showed up on the port, but as I got closer to a perfect fit the soap stone did not work. I then tried dusting the seat with carpenters chalk, and that worked but I had red hands all day and it was hard to see. That is when I came onto the solution, I was wiping the chalk off the seat with a wet rag then drying up with a damp rag. Before the seat completely dried, I placed the port the seat to double check. Well it turns out that if the port mating surface is unpolished as mine was, the damp surface makes a shiny spot on the acrylic when it comes in contact with the steel. This is fantastic! I just give the seat a wipe with a damp cloth, then place the port in the seat and check for a high spot. Then I remove the port and watch for the high spot in the steel, witch usually leaves a little water mark, then I sand that spot with 600 grit wet sand paper. Then repeat about 1,000 times ;-)</div><div id="yui_3_16_0_ym19_1_1469110001212_8736" dir="ltr">Hank</div></div></body></html>