Mine is a jet3 ultra and I had this problem a few weeks ago and I thought it might be the batteries. Turned out that the connection at the control arm was quite dirty. Once cleaned it works OK ... you could try that.
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Mine is a jet3 ultra and I had this problem a few weeks ago and I thought it might be the batteries.
Turned out that the connection at the control arm was quite dirty.
Once cleaned it works OK ... you could try that.