When I first built some 410s when they first came out the link seemed to short with 1.5mm and the servo arm wasn't quite upright when the wheels were straight. Then built an r and the link was using a 3.5mm spacer and it was perfect.
It was a revision I think
As for not having even steering throw John, you should be able to acheive even with both . Yours sounds like an incorrectly adjusted servo.
When I posted earlier I ment even bellcrank ratios! And their leverage ratio over the servo! Hope this helps
R is better at 3.5mm but I am not sure if the later 2010 spec dex410s have this also? . I expect so.
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