Hi fliggyg... I did not have the .60 size... I do have the .46...
IMO on sealing the hinges..... What can it hurt??? Will it help???? I did not seal hinges before
but now no matter what I'm putting together I seal all hinges with clear covering... When I
sealed my first hinge (DO 46) I just used scotch tape.... It lasted longer than the plane did..

Not much help on the mixes... I did try spoilerons, and flaperons, and elv/rud on the "Do 46"..
I just started with a very low setting... say 10-20% then increased it after giving it a try after
"way up high" getting a feel for it... I have since stop using the mixes for the time being...