Changed oil on the 750 a week or so ago. Ever since, have had an annoying little leak from the oil tank drain plug. Snugged it once, but still weeps. Drained it today and figured the washer (aluminum, not sure that is correct material?) was pretty mangled and not sealing. Temporarily, I used a fiber washer until I finish putting together a little order of other bits and pieces I need. How will the fiber washer hold up, will it lose compression/tension? Again, it's just a temporary measure.