<div style="FONT-FAMILY: Times New Roman; COLOR: rgb(0,0,0); FONT-SIZE: 16px"><DIV><SPAN class=misspelled>Hi</SPAN> <SPAN class=misspelled>Volks</SPAN>;</DIV><DIV>Saw some rust spots below the cover for the sliding door.&nbsp; Happily I was able to remove the cover without incident.&nbsp; I would like to know if it is OK to use POR 15 in this track.&nbsp; I wonder if the difference in surface will make any difference or if it will just wear off so quickly as to make no difference.</DIV><DIV>&nbsp;</DIV><DIV><SPAN class=misspelled>Dave</SPAN> B.</DIV></div>