I had 100% last time I was in there. Do some communicating between suppliers in Guam and dive operators on island....you have to be proactive and follow up follow up and follow up the day before your departure from the states. If all else fails contact these dudes in Micronesia I am sure that they can help you out: Jim @ GMI SCUBA Wholesale (
gmi@guamcell.net) and Rob Berg (
robert@diveguamnow.com)
Have fun:matt