This is a review of the hobby king 250 gt, using a LOT of align trex 250 parts, also the electronics are from the blade SR.
Also look at the added a 3 minute video that I filmed minutes after this one showing why you should replace the tail blade grips and pitch slider.
List of the align parts I used, the higher it is on the list the more I'd suggest you change it.
1. Align Feathering shaft (must replace)
2. Align main rotor blades (must replace)
3. Align 250 belt (should replace, have a spare)
4.Align main shaft (Should replace)
5. Align tail blade grips (should replace)
6. Align 250 tail pitch slider (should change)
7. Align landing gear (optional)
8. Align ball links... balls and links sold separately (optional)
9.Align trex 250 or any other canopy (optional)
10. Low voltage alarm.. (optional)