Anyone ever try to switch out the 17mm lower headset cup for the zero rise themselves rather than having a shop do it? I just removed it, but had a little trouble and scratched up the 17mm cup a bit on the inside. I used the Park RT-2 headset cup remover but with the top cup still in place, I could not pull up the tool far enough to place the bottom prongs of the tool on the very top of the cup inside the head tube where the cup is against head tube. Instead the prongs rested inside a lip lower down in the cup that the bearings lie against. Given that there was no apparent way to remove the tool at that point other to complete the job, I had to pound out the lower cup with the tool in that position, which worked but scratched up this inside lip of the cup a bit. But that's inside the bike and I didn't seem to deform the cup at all so I don't think I need to replace the 17mm cup before I use it again. Do you need to remove the top cup first to remove the lower 17mm one? That might have allowed me to pull the tool up higher and place the tool correctly.