So drag racing a few weeks back. I was redlining first went to shift into second. It wouldn’t let me shift and ground. So I did some digging around watching videos. So I finally tried it. In my situation it fixed the problem. Tools required to do this are a 17mm wrench and a 12mm wrench. It takes about 15-20 minutes max. Disclosure I’m not responsible if this doesn’t fix your issue.
