my balls err i mean my BULBS are dropping LOL

yo fellow CFL'rs,

i have my powerstrips ziptied to the lid of my growtub. i got single sockets and two way spliters to go in them from HD. the two way spliters screw in and are fine. the sockets PLUG into the powerstrip and are not very tight. my 42watt bulbs keep sliding out both when i only use one bulb and when i use the splitter as well. i tried ducttape but it did'nt look like it would last very long and did'nt.
if anyone using powerstrips has any advice...please let me know.
 
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