I am not sure what the issue is. I run a remote on my RT and never have problems. The expansion chamber should not cause an issue either as it just lets the c02 expand from liquid to gas before entering the marker. One thing I have had happen on with the remote though is I turned the knob in too far and it restricted the flow enough to cause it to act like I was out of air. Now I turn it in and back it off 1/2 a turn or so.

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"Only the strong survive. The weak are killed and eaten as fingerfood." SDI SSgt Patterson, Platoon 1077 USMC