I assembled and fitted out a Harmon Rocket for a friend. I was impressed with the quality of the materials used in the airframe and had no problem with most of the fittings supplied in the box. Two items were below standard. The fuel tank pipes are made out of some sort of plastic which refuses to maintain the bend needed for the vent and filler. The undercarriage material is unfit for the job. Best use it as a jig to construct a usable item out of decent grade aluminium.
I have limited experience of ARTF. I bought a Kyosho Ag Wagon some years ago and it has given faultless service. I made no modifications, and did no additional gluing. This is not the case with the H Rocket. The power unit we fitted is an SC 70 four stroke. A beefy unit which provided all the weight needed to off-set the three servo's in the back end.
Unfortunately the engine failed on takeoff (all the usual checks had been made) at about 5 meters from terra firma. The pilot failed to keep the nose down and the aircraft stalled. The engine bulkhead came away from the fusalage revealing a slight trace of hot glue adhesive.
The undercarriage bent back far enough to punch a hole in the leading edge of the wing.
If your going to get a Rocket, buy some decent fuel tank fittings and a two pack epoxy resin. While you're at it buy a sheet of ally to make a new undercarriage. This is a first class aeroplane that needs working on before it's air worthy. I agree with previous comments about the split elevators being a waste of a servo. It's an easy fix.
I took the usual photographs but I guess you all can imagine what it looked like after the crash.
Back to the building board. I know better in the future!

There are old pilots and there are bold pilots. There are no old bold pilots!