485 Extended Boom

I am having problems getting my extended boom to go back into the main boom once extended.  There seems to be a plastic sheath around it, is that supposed to come out as well or does it remain in the boom?

thanks!
Darren Kapsimalis
485 Adephagia
formerly Talala

Plastic Sleeve remains in boom. I sprayed mine with Blaster and forced it out with the line to a winch. Cleaned up surface of shaft with a greeen scubby and now it works.

Fair Winds, Bill
iZALLGOOD