Huben Regulated vs non regulated air hold ability?

Hi fellas,
quick question,
I was gonna pick up Huben gk1 in .22 but then i found out that these gk1’s are notorious in slow air leaks,
and also Huben is coming out with regulated version of these awesome pcp pistols pretty soon,
i was wondering if slow air leaks have something to do with non regulated systems in these pcp pistols???
thanks.