Dealer hat on for a bit....
You will have to send your G-11 to the USA for tucked under motor mod.
Scott Losmandy has many many "evolutionary" changes to the G-11 over the years. The tucked under design does not improve the tracking, but does make it easier to transport the EQ head without damaging the motor/gearbox assembly.... which was easy to do with the earlier protruding motor design.
It is prudent to unbolt the servo motors for transport if you have the earlier G-11 version.
The new G-11's have much improved stiffness:mass ratios, (much dead metal is machined out of the new version), and the gearing is smoother, more precise with virtually zero backlash.
Gemini 2 has undergone a hardware revision as well, the new PCB's are more compact and do not suffer from random static discharge induced re-sets.
Lastly the new HD tripods neatly fold for transport and are much easier/quicker to set up in the field compared to the old pier head + slip on leg design (it was a bit like wrestling an octopus)
The OPW-11 is easy to retrofit. I have one on my G-11. It vastly improves RA tangential stiffness and dropped the PE of my system to +/- 3 arc sec...not bad for a six inch gear!
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