Hey folks: My DIY lights are great. I have run into a little problem with the glue. I glued the waterproof light switches to the PVC pipes. Worked for a short while(2 weeks) then failed. Seems the glued stayed on the PVC but not the switches. I used the WP switches from batteryspace.com and 5 minute epoxy. The are made of hard plastic. Any recommendations on other glues that may work? I was thinking marine goop. Thanks Charlie