Mike;
Slow down and take a deep breath . You are on the right track . Now , you want to re-use those prop guards . So do this . Get a pair of smooth jaw needle - nose pliers . Now press the contact points where the glue is and squeeze firmly .The C.A. should chip off .
Now make sure they are shaped right and put them away for now . Do you have a " Five Below " store near you ? See if you do . Go there and see if they have a blister pack containing nineteen little bottles . Buy it . Go home and put your shaped P.E. in these .That way they won't get damaged .
Now as to the ArtWox deck . Because I do mixed paint for decks I have Never used them . I have thought about it . I was thinking though . If it has an adhesive on it and you had to remove it . Clean the deck areas . Now clean the backside of the Art-Wox deck . Apply Micro-Scale foil adhesive . Foil Adhesive ? Yup .
Let it dry well and you'll have new sticky on the deck that will let you re-apply it . Believe me it will stick again ! Then do those gun tubs as you described in brass .
For forming gun tubs in 1/700 or 1/350 I keep three sizes of round dowels handy . I roll the brass around the one I need and it is always Smaller than the tub needs to be .Why ? Well you just then open the little curl up to the size you need !
To glue this in place I DO NOT use C.A. I use " Aleen's Sticky Glue " (Copper color Bottle ) The Aleen's gives you time to get it just right . If not , just wet a " Q " tip with water , wash it off and try again . I do.
After the Aleen's is dry you paint over it just like any other glue . Oh , make sure you use as little as possible . Take your Aleen's and put a blob on a bottle cap and gently swipe the part in it just barely getting any on the edge or end .That way , No Blobs !
Remember , if you have any questions I am just a post away . Tanker - Builder P.S. Besides you got this far and stopped and decided a re- do was in order - See , You are on the right track ! !