Getty operator arm too long

A quick learner from Fountian Hills, AZ says:
I need to return 39-044. The base fits but the arm is too long. I attempted to pick the correct one. The measurements for the base are correct, left side of window with handle on right side of unit, however the arms are too long for the window. Everything else is perfect. Do you have an alternative? I need at least 2 assemblies with what looks to be 8" arms and a handle for the 3rd one. This handle fits the one I have but I still need the same base but shorter arms for two others. Thank you.
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Paul from SWISCO responded:
Look at our 39-029 and 39-030 instead. These operators have the same hole centers in the base with an 8-1/4" arm. Would they be better?
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