Snowpulse/Mammut Refill Cartridge in Niseko

Hi all,

I've just arrived in Niseko for the season and I'm new to the area.

I've brought with me an empty Snowpulse refillable cylinder, foolishly I thought it would be easy to have this refilled but it is proving not to be - from what I've learnt the only options are scuba shops in Sapporo and Otaru.

Does anyone have any experience with getting airbag cylinders refilled locally to Niseko?

Thanks.