Greetings Fellow Board Members! I just had a question about some FMF pipes and thought this would be the perfect place to ask. So I have a 2003 CR125 with the stock header and an FMF Turbine-Core 2. My question is that I was thinking about getting an FMF Fatty to replace the stock header, but to my understanding you need to rejet the bike after getting a new header? It is currently jetted perfectly and I don't really feel like tearing down my carb since I've done it a lot to get my current jetting perfect. So would I need to rejet it if I got a Fatty pipe? And also I was considering going with the stock header and getting a FMF Shorty because I do a lot of trails and tight woods and want some more bottom end, would I need to rejet if I just got the shorty? Thanks!