Hi. First time posting. Not sure if I'm doing this right. Anyway, I bought the Radmission Steel Blue High-step. I'm trying to modify the seat post with a suspension post that fits appropriately. Apparently the existing post has a diameter of 27.2 mm , and a length of 390 mm, but I'm having trouble finding the right one on Amazon. And of course, the Rad shop is currently out of stock. I was wondering if anybody else has successfully replaced this, and what they might be able to recommend? I initially bought the Enhanced Comfort Saddle, but quickly realized this was a seat more for cruisers than peddlers. I'm definitely a peddler. So, I bought a really nice anatomically correct seat (Serfas RX Men's Bicycle Saddle), but still looking for suspension there as I have pelvic/back pain issues already. I am also looking for an appropriate kickstand which is also out of stock on Rad. Any Thoughts? Thanks!