Hi Sherry,
We need to know which part you are talking about.
Is this the top telescoping bar with the back tightening knob?
Or the lower telescoping channel with the black handle lever where the lever handle fits into a series of holes in the side of the channel?
I 110% agree with Sunline Fan, do not take the gray end cap off the awning tube but we do not know what part you are referring to.
Here is the "lower" arm with the lever handle
Here is both the upper and the lower. The Star and spinner twirly thing is hanging off the "top" telescoping bar with the black knob you tighten up.
Hope this helps
John
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Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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