Hey sooner, welcome!

I shoot a 55-lb. recurve with a spincast, and the biggest problem I have is either forgetting to push the release button, or bumping the handle and engaging the pickup-pins. That's the only reason you should be having problems like that. I don't know what type slide or other fastening means you use to tie the line to the arrows, but even when I shoot and the pins are engaged, the arrow still flys at least ten feet, and I've only had one break like that. I shoot with 120 or 130 lb. braid I believe.