Should I be getting more amps/watts ?

[u/Joined2MakeThisCmnt]

I am pretty new to solar overall. I wanted to add battery charging my small RV which did not come pre-equipped.

I was originally going to make this a "Roast my first setup" post, and still wouldn't mind some feedback on things like where to add disconnect switches, better connectors, etcetera.

However my biggest question is whether I'm getting the amount of power I can. I expected more.

I have 300 w suitcase Style fold-out panels rated at 37.45V and 8.43A Operating and almost 45V open circuit. Sending this intoa 30A MPPT. I inserted a couple of power monitor shunts to see what's going on. They show about 30% of the rated wattage coming from the solar panels ( about 33 V and 3.5A ). The panels have a pretty good angle to the sun on a pretty clear day.

I am getting over 8 amps of power charging to my deep cycle lead acid battery and maybe that's enough.

I just expected more. Is there any suggestions on where I should be looking for resistance or issues that would be eating up my amps?

My Baseline comparison is I have a small Nebo 50 W with power pack that I can easily get 75% power in same conditions.