seems the model flies just fine.

A club mate has the BH- T28 Trojan in 60-91 size, with a similar retract system. That works just fine and the model went together easy peasy. Balanced right where the manual said it should too. same for My Extra 300s. I've not had an issue with Black Horse ARF's yet.
Ialso checked the cg location from leading edge through calculation and ended up with 98mm, two mm ahead of the 100mm recommended.

pity that you've decided to sell it. It looks like a great little flyer.

Oh btw, retracts are simply problematic items. We have all sorts of models from many many different manufacturers and all with retracts have problems with the system from time to time. The more complicated the model, the more the hassle.