Any additional effort could be attributed to a few things.
1. The heims are new and need to be lubed
2. The ball in the heim is in a bind with the race causing extra effort.
3. The geometry is off from the rack centerline to the heim pivot point.
I found it necessary to lower the rack mount to bring the tubes parallel with the upper a arms.
A heim is designed to work with the load pushing or pulling along the centerline of the ball.
If it is loaded on an angle, additional effort is encurred due to the loss of leverage.
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If the only tool you have is a hammer,
Then all your problems look like nails.
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