RE: topflite spitfire retracts
Keep in mind that the dihedral of the airplane and the fact the struts retract outward not inward, the amount of movement needs to be more than 90degrees.
Is that important?
Well, most gear sold for P51s, P47s and such (where the struts retract inward) often are advertised to move 80degrees. Check most retract mfg's and you'll see the good ones offer those 80degree ones. It was worthwhile to do for the P51s and such. It would be just as good to have the same for the Spit, it would seem.
Why is it important? other than looks, if they're not perpendicular on touchdown, the hinging will have to absorb a side impact it doesn't see when correctly angled. It'll see it every landing, and have to deal with it all the time the sucker is taxiing or just sitting. Most aren't designed to see side torques like that at all.