Align T-REX 450SA ARF Manual page 36

10.3 After installing the linkages, check the fit of each ball link on the control ball. Ideally the link will fit
the ball securely and move freely, with no additional play on the ball. If any of the links fit the balls
tight enough that they are difficult to twist by hand and do not move freely, we suggest adjusting
the fit of the link so that it moves more freely on the ball. Ball links that fit the control balls too tightly
can cause difficulties in control and accelerated servo wear.
We recommend the use of an adjustable Ball Link Sizing Tool (JRP960219) as it will allow you to
adjust each link for a precision fit on the ball. Also, we strongly recommend the use of Ball Link Pliers
(KSJ673) to help remove ball links from the control balls without causing damage to the link.
If you find any ball links that do not fit the control balls securely, replace them immediately with new
links from the Spare Hardware Parts Bag. Links that are not secure can disconnect from the balls in
flight, causing a loss of control and possibly a crash.
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