I was trying to spray a little 100 wet shot through a TB plate on the dyno and it kept spraying n2o and air. I purged it for a good while till solid n20 was spraying out. Then I would do the run and the n2o would start cutting in and out spraying n20 and then air. So I purged it again an had air come out then solid n2o. Try spraying it again with the same results. This is with all brand new parts and a fresh full bottle and good pressure. Anyone had this happen before?