Trying to figure out how to keep the bag to stay tight all the way through the infusion process. there’s absolutely no leaks before we start infusing the resin. But as soon as we open up the resin inlet line the inlet side/area of the bag loosens up and it really never get a tight until the resin starts to gel. Anyone have this issue or does anyone know how to fix this issue. I’m finding small pitting on the surface and only on the inlet side so i’m guessing g it’s happening from the bag being loose on that side.

Ok will try that on the next one. We did lock off vacuum line and left inlet open for like a minute or two but maybe will go a little longer. We also switch over to using MTI hose for our vacuum/ exit line. And advice for that product if you have used it before?