Hello, I have literary same issue. It happens to me also when I shoot a projectile which has a ribbon trail on it, the trail starts like 1 or 2 meters away from the gun from which it has been shot. If anyone knows a solution for this I would highly appreciate it.
Anyway I found like middle way, which kinda works, but creates a new issue. So if you remove your spawn per point module and replace it with just a regular constant spawn. That should keep the trail emitting from where you wish. But then there is the issue that it never ends and the only way how to get something like a phade in or phade out effect for example when you are slowing down till you turn off the engines, is with a help of some parameters, and code.
Hope this helps you a bit, and that someone else will come out with a proper solution for this issue.