YeloSno's Hierarchy of paintball gear thread
I just bumped this up, but I'd go and give it a look over.
Your marker is a blowback and the air from your tank is forcing the paint back up the hopper. I think the proto primo is a gravity loader that seems to be ok with higher recoil markers. I'm really not to sure about the perfect loader for you but maybe someone can help is with that. My prophecy has a freeway which guides the paint down the feedneck. I guess when empire designed the freeway they included venting in the freeway to avoid the air from blowing
Paint back up. My best friend shot a Tippmann 98 today with a rotor
And there was no problems from what I could see with that loader. That being said, those are pretty pricey.
Depending how much you are willing to get into paintball, I'd definitely recommend a newer electronic hopper. The new ones are amazing, but expensive such as the rotor, pinokio, and prophecy. They load amazingly fast, have good battery life, have a generally light touch on paintballs, and the motor doesn't whine when balls are not being loaded if you like to play in the woods. Look into VLocity Jrs. They have great reviews and are fairly cheap nowadays. There are downsides to. Your best bet is to do a little research if you plan to get one.
As for the trigger, you don't need to get a new one. Its preference. Go down the hierarchy list and if all your bases are covered and you absolutely love paintball and want to move up, get a newer marker instead of upgrading.
It's all about having fun first though. You don't need the newest most expensive equipment to have fun, always remember that.