Mixing 134a and Top Gas for GnP GBB

I have a GnP GBB and the power of using Top Gas is at least 罐底.... and using 134a is quite marginal. I wonder if it is possible to mix Top Gas with 134a to have the power in between? I have tried to do it like putting in some top gas and fill up the whole mag with 134a gas... it shoots around 2-side power for the first few rounds but all gas runs out after 6 rounds... (it can shoot full 30 to 50 rounds without problem if i just use pure Top Gas or pure 134a)... does it mean it is not possible to mix them? anyone tried? thanks.

I'm not an expert or anything, but common sense tells me you're gonna blow your face next time you pull the trigger

you should put in 134a gas before top gas as top gas has a higher pressure

let the mag warm up a bit before shooting also helps

請問師兄買0左邊個MODEL No.

Thanks for the advise... will try a bit....

I got G&P CQB (WOC 14)