it's getting close to changing the oil/filter on the 400f, how can i tell, the 4 into 1 seat cover that i put on has made it to just over 2 years, with one seam in the bucket area splitting apart, can't beat that! the two maintenance projects are pretty fail-proof in consistency.
if only 4 into 1 could convince its connection of seat maker to use the same print, or style of products but only with better quality of material, it would result in 2 things: 1, more customers and 2, possibly a company overall image to uphold in demanding improvements to parts that it deals in, like carburetor jets. think about that, i'd pay twice as much for a seat that would last twice as long, we're in a technology age that can do that. google nearly translates any language around the world. if you got your foot in the door, don't just hold it there, get inside. quality, push for it, support it, its fading away.
oh, and donate to SOHC/4 it's the link that ties it all together.