MinnFlyer, thanks for you advice. BTW, where in the review -- is it on this site? Also given that so much else is wrong with the manual I'm wondering about all the really important stuff at the end, namely the CG point and all the throw settings. Here's what the manual says:

CG: 7.5 - 8 cm behind the leading edge. BTW, the 8cm mark coincides with the back of the leading edge sheeting. Curious that this is the only dimension given in metric.

Initial Flying throws:

Ailerons: 3/16 up and 3/16 down
Elevator: 3/8 up and 3/8 down
Rudder: 1" right and 1" left

Aerobatic Flying throws:

Ailerons: 3/8 up and 3/8 down
Elevator: 1" up and 1" down
Rudder: 2" right and 2" left

I have to say that the minimal settings seem awfully minimal to me. I think even my RCM trainer had more throw on all surfaces that this! MinnFlyer what do you think?

On my particular spacewalker II with the battery and Rx in the forward compartment (but behind the tank), a Magnum 40 set all the way against the forward retaining bolt, no cowl, and both pilot figures installed, the balance (upside down) is just about perfect at the 8cm position, i.e. right at the edge of the wing sheeting. Would there be any advantage to moving the CG forward to the 7.5 mark with a few bits of lead on the wirewall?