just bagged up my latest mold and its very obvious that the vac film is bridging badly,no point in trying to infuse it like this lol.
ive never tried doing pleats before so im not entirely sure how i go about it,is it just a case of taping some folds in the film before i stick it to the mold?
also would super 77 help with the carbon to make sure thats not bridgeing? i tried some cheap spray adhesive on another part and the west epoxy didnt dissolve it at all 
Being a shallow mold just tape in one each in the middle of each run, Take about 60mm or so of the tape lay the bag to the middle of the run then lay the tape protective film down ontop of the tape already there lay the bag ontop of this tape then lift remove film and run the bag down the other side and continue. There you go one pleat.
Baz
i just tried another putting 4 tucks in the middle area but only about 25mm high,slight improvement but still no good.ive ran out of film now lol.your technique sounds alot easier so i will give it a try.need to order some film now,are you using airtechs basic film?
right,ive tried it and i think i got it correct.ii took some pics so you can confirm i did it right and also to help other people who find this post on the search
main tape laid all around mold edge-
film laid halfway along one side and 60mm extra strip of tape added-
film laid over extra strip and lifted upright-
film folded over the extra strip
backing tape removed from the extra strip and film continued along mold-
Man that sure is one way to go about making a pleat.
I just make sure I have ample film and if I have 4 1" pleats I just tape them closed with tacky tape.
Look at it this way, the film is cheap compared to your time and the cloth. However, you dont want gigantic pleats as they are asking for trouble.
Just a coupld small ones should suffice.
Another tip I got from my sales guy was to use a soft pink eraser like school kids use and as the pump draws vac on the mold, use it to push your film into place. It will help to alleviate bubbles and bridging.