Looking for a helicopter repairer

Hi all

I have a couple of Blade 180 CFX’s that I have been attempting to learn to fly at the Indoor sessions and as is their way, they have had a rough time of it. Until now I have been repairing them myself, but my last attempt to take flight seemed to indicate that I have made an error somewhere that needs a more knowledgable person to look at.

I have most of the parts needed to make the repairs, though there are a couple of upgrades that I want to make to one of the machines as part of the process, ie convert it to tri-blade version, install a belt drive for the tail rotor, upgrade servos, if you have any recommendations.