What kind of glue is anybody using to set up the leather on the tube? my 1st one came out very well. i repeated the process again using contact cement. I stack the leather pieces like dimes, with rubber cement, clamp it. The next day i drill with a 7mm, insert the tube with thick ca, then let it cure over night, and the next day when i use the barrel trimmer it releases from the leather, i have tried ca med&thick, and sumo glu(loctite) cures like gorilla glue but white. I have also used rubber cement to glue the tube no luck. should i drill the leather pieces out 1st then glue to tube 1by1 any suggestions