Need pediatric GJtube expert advice

[Bevpil]

Does anyone know the specific complications with GJ tubes and children?  Kiddo is coughing and making faces (unable to speak) most of the time, esp with meds.  TF 20 hrs/day.  Venting quiet often, bubbles of air clear content.  HOB ^, slow push.  They did and xray to confirm placement.  Maybe it isn't long enough?  24" I think for 54# kiddo.  

[Kitiger, RN]

Do the meds go in the G or the J? I would expect most to go in the J. The G is venting air; does it need to be drained? What are the physician orders?