So with the lack of and probable expense of a collective I decided to have a go at building my own from some spares parts around the house. Took a couple of days of soldering and fitting but works really well considering after testing with the Huey. Yeah its a bit crude but has given me a collective with numerous buttons and two spare axis. At some point Ill be cutting the side of the throttle and linking it directly to the collective so its all hidden and internal but haven't figured that bit out yet and might add a small hydraulic rod underneath to make it a bit more stable.