What the thread found

• On a Betz-style top stage, an E-clip (retaining ring) sits between each adjustment knob and the housing; if one is missing, lateral play develops in the post-screw block.
• The remedy is to remove the knobs and inspect or replace the E-clips to eliminate play.
• Troubleshooting approach: document with photographs and disassemble stepwise, starting with the four countersunk screws at the base.
• The gimbal was ruled out as the cause after inspection by the gimbal manufacturer.

Depends on

• Procedure specific to Betz-style top stage design.

Parts

Top Stage

Same gear or parts

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