Welll this is my second fill with the Blast it free method and it worked absolutley fantastically magnificently well AGAIN.
Roll up my sleeve on that arm (just in case of a blow back)
Put the nozzle in the filller tube with the handle at 2 o'clock ( almost upside down)
Pull trigger full on and hold it on full
Let go when it clicked off after 72L flat out ( took no time at all)
You little blooooooody beauty - if that keeps working i'll be a happy little Vegemite -- i think i was possibly the first to have the valve fix done and it did make it much better but lately has stopped working this works a treat.
So MR Marc Hillman - YES it works a treat - why did none of us think of blasting the damn valve open before ( strikes palm on forehead )