I'm havin trouble with my first infusion where iv got a tiny air leak sumwhere and I can't find it.

Hello Im an apprentice aircraft structures technician and i work mainly with composites my company has started building carbon parts and i am running into difficulties with losing vacuum while resin infusing it seems that either my vacuum bag is blowing out or the vacuum is being cut of by the resin flow. Any pointers or helpful tips and tricks to avoid these issues would be much appreciated.