I decided to put a plenum on my Dreamline. Followed the Video, degassed, installed, and went to refill. There was a air leak at the fill port, noticed the o-rings nearest the outlet was pinched. Got the fill probe out, re-set the o-ring and went to refill. Pressure got to 100 bar and it blew the fill probe out! I always secure the whip mid-line so just a big blast of air. No damage, nothing hurt except lost the o-ring. So I need a new o-ring and also what did I do wrong re-filling the gun. What size o-ring goes on the fill probe? Thanks all...