The spool usually comes with the gauge. Just reuse the spool for now. Make sure to lube the o-rings well since it is a dynamic connection.
Then go on Dive Gear Express and order some spares. Those little o-rings and spools see a lot of wear and tear and is my most come source for small leaks.
Then go on Dive Gear Express and order some spares. Those little o-rings and spools see a lot of wear and tear and is my most come source for small leaks.