Les said to sent as shown above if you want the added sleeve to keep the return line from getting worse and eventually wearing thru. He needs the outer silver sleeve to make sure the added ring is snug to the inside of the silver tube for best performance. Also it makes the RV more stable.
If just wanting the rams rebuilt remove the silver tube and save the shipping. Personally I would spend the extra $$$ and get it done right.
FYI he uses MUCH higher quality seals and a MUCH better designed.
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