You can straighten the feathering spindle by hand ( find the high side and tap gently with light hammer etc to straighten it - I do it a lot). I replace the main grips the most on my heli. Flybars can be straightened by hand also. I would suggest, based on what I replace on mine, extra grips (4 or 5 packs), Main gear, an extra of everything for the rotor head assembly. Yep, it will drift left as Osterizer explains. Good luck and good flying.