I've been doing a little maintenance on my 450. I had a minor crash, barely dinged up the blades but bent the main shaft slightly. I replaced the main shaft and thought I'd check and lube the thrust bearings while I had the head apart. The blade grips moved freely before but has some resistance now that I put it back together. I've cleaned and reassembled the thrust bearings twice and still no change. I really can't figure it out but thought I'd just replace the bearings and be done with it. I've got two questions if anyone can help:
1) could I have bent or slightly crushed the thrust bearing when I reassembled ?
2) my LHS can't get align parts so would any thrust bearing that fits a 4mm feathering shaft work?
1) could I have bent or slightly crushed the thrust bearing when I reassembled ?
2) my LHS can't get align parts so would any thrust bearing that fits a 4mm feathering shaft work?