Vibration studies revealed the Mountaineer G1327 more sturdy than the Systematic G1325
This was explained by the "bridge" under the top plate shown above
Differences were more noticeable when under the slightest wind
Differences were further amplified when the Mountaineer had its center column replaced
with a Markins TB-30 vibration dampening plate.
This still holds true for new 6X Mountaineer GT3530 vs. the 6X Systematic GT3530S
and their respective variations