The Mechanic

Recently bought two Abu Garcia Silvermax rod and reel combos. I have found them easy to use and really like them. One problem I am having is after a couple of minor backlashes, when clearing the jam, i find that my line has been cut in half on the spool. I had an inexpensive Pflueger for the last two years, and even through major backlashes, never had the line break inside the spool. I thought maybe I had bought some old brittle line (10lb spiderwire mono), so respooled with Sufix 12lb mono from a different store. Same problem. I was throwing spinnerbaits and crankbaits. I contacted Abu Garcia, and they just want me to send them the reels for warranty possibilities. Since it happened on both reels, I think it is something I am doing. Any ideas? Thanks, Roy