Oh the age old problem with any of these guns. Here is the solution I use, and it works well:
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Running out of elevation is another issue with these guns for some reason. No wonder that almost every Sam Yang/Seneca came with an above drooper with the gun. Attempted to use without, but could not due to either elevation max or scope bottoming out.
You can also buy the FX no limit mounts or similar, or use a hacksaw (not recommended but doable).