Dash AC not cold

Lol, I would think that to some extent just like in propane 5 gallon propane tank holds less propane then a 7.5 gallon. I would think the lines would increase the capacity somewhat but probably not double LOL so I get what you're saying. Without ripping the system apart on the highway basically I'm going to have to wait until I get home I guess. I still don't really understand the whole expansion valve thing and somebody was mentioning kind of screen and taking something and cleaning it I don't know if that means the system needs tore apart to do that. I know replacing the dryer and would involve tearing it apart as far as I could tell here the fittings are not removable as I see some places sell like green o-rings but it doesn't appear that this system is removable in terms of those fittings except for whatever that little valve is that looks like a tire valve. I have a feeling the dryer isn't removable either unless it's cut or something from what I can tell everything looks all soldered or welded or whatever you want to call it. I'm pretty sure I'm pretty primed to get ripped off at an AC shop if I'm not careful. On a side note I've never seen the compressor turn off while the engine was running I guess I should check to see if it turns off when the air conditioning knob is on off but it never turned off when I was filling it or whatever I guess maybe because of the pressure on the low side is what it is I don't know so there's a few things here that I don't totally understand. Is there anything I can do with that screen with the closed system? It almost sounded like I could but I don't know then I still have to find the stuff. Thxs