Got my robart retracts delivered yesterday!
They're pretty sweet. Very little force needed to actuate them. Positive locks in both up and down leave very little play in the strut when locked. (very little).
I'm extremely happy with them and have brought one to work to play with for the day. lol

I should have held off on sheeting the top of the right wing till I get these robart units installed. I may end up cutting a section of the top right wing off to do the plywood glueing.