Securing gate bushings on Source 4

Does anyone have a good method to secure the gate bushings (the little plastic pieces that go on the metal tabs in the reflector housing and allow the barrel to rotate smoothly- see S4 assembly guide p. 7)?

Whenever I remove the barrel to clean the reflector, one of the bushings invariably falls off and it's a pain to get them all to stay on as you put the barrel back in place.

Anyone from ETC have a "approved" fix or advice on anything that should be avoided?

Thanks,

Todd

 

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