Dtsag, you made the same mistake that Kipdent made. Re-read Mark's original post. He is looking for someone with experience that has upgraded the capacitors in their BAT preamp that uses 6922 tubes, not 6H30's like in the 31SE.
Many still prefer the sound of the 6922 to the sound of the 6H30's. The 6922 offers more midrange bloom, while the 6H30 is more dynamic. Mark isn't asking about a upgrade to a VK-31SE. Do you even know that the VK-31 is still a current preamp from BAT? The reason is, some people do not like the 6H30 tube, they find it sterile sounding.
BTW, this is not the forum to post a classified ad. Splurge and spend the $6.
Happy Holidays,
John