Strata Soda Stream CO2 Regulator

Got this regulator and tried fitting it to a soda stream but couldn't wind it in without the gas passing through, so the guys at proline sent me a free extra washer which fixed the problem, though I had to wait a week.

After receiving the extra washer, I fitted it to the bottle, tested with a spray bottle and it works with no leaks.

BUT it didn't wind on perfectly and began to cross-thread when I tightened it onto the bottle too hard, works well if only tightened just enough.