I was hoping for a simple upgrade for my Roscoe 6 by switching from the SR Suntour coil spring it originally had to an SR Suntour Raidon air fork. I looked up all the specs on Treks website and bought what I assumed would fit according to the specs. Specifically that Trek said it was a tapered head, so the new fork I bought is tapered. To my surprise when I removed the old fork, I found it was straight! I tried installing the new tapered fork anyway but it doesn’t seem to sit right and no matter how tight I try to make it, there is still a wiggle to it. Will a tapered head not fit? Do I need to replace anything more since the old fork was straight? I’m so confused by this and a little frustrated since I believed I was only replacing tapered with tapered. Please help!