doo

First time out with my new Piranha SRT. The hopper was tough to get into the feeder, and while twisting it in the feeder began to unscrew from the frame of the gun. SO I screwed the hopper into the feeder clockwise to make sure everything was tight and secure. After the first round the feeder had come loose, so I had to screw it in again. About the third time I had to tighten the feeder into the frame, it stripped the threads out and I had to secure the hopper with many layers of tape. I don't think I was using too much force.

Is this thing ruined? Even if I get replacement parts, how do I prevent this from happening again?

Or should I demand a refund, and buy something else???