I've been playing with getting the servo precisely adjusted. Two things I've noticed:
1. When turning right, the servo is smooth to a point, then "jumps" over a spot before continuing travel to the endpoint. My stock vehicle (both are MR-03VE Pro) doesn't do this. Do you suspect this something common after installing the double a-arm, or something in the servo?
2. The servo will allow greater travel at the rightmost endpoint, before it binds / buzzes, than it will in the leftmost direction. This seems to be common to both vehicles (stock and double-a). Have you observed this on your mr-03's?
Updated
I performed surgery on the servo gears today and installed a metal 4th gear from Kyosho (MZW417). I never found the metal 3rd gear mentioned above; not sure it exists.
When installing the metal 4th gear, I had to take apart a good deal of the entire servo mechanism, so I decided to take it all apart and examine what was going on. I'm glad I did. Part of the original plastic 4th gear shredded and the debris was nicely munged into the 3rd gear. Need the old magnifier to clean it, and then I inspected the other gears. I found some debris in the 2nd as well. After doing all that and putting everything back together, which is a bit of a pain, everything is working well.
The steering is much smoother with the metal gear. Despite the laborious installation, I recommend this upgrade.
I never mess with Sub trim. I would reset the model and then just adjust with regular st trim. Then I would use the st Balance adjustment to make it so that it buzzes just slightly both left and right at the very end of the steering wheel travel on the radio.
At first, I didn't agree with this because rather oddly written instructions in the ex-6 manual indicate the proper sequence is to set sub-trim first (pg. 13). I tried your method anyway, and I now disagree with the manual. Sub-trim moves the endpoints in the adjustment direction, which results in having to chase endpoints when using regular trim while on the track.
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