Quick question. I have a Chronarch ci4+. Relatively light use.  It's maybe three years old. Yesterday I noticed while landing a small fish that he was taking some line. Got him in and figured I had just backed it off and didn't tighten it back. I tightened it and maybe five casts later I caught another and it was loose again. This repeated itself several times. 

 

The reel has never done this before. Yesterday I was fishing a jerkbait and really ripping it. I've not done that before with this reel.

 

I haven't put a mark on the adjustment to see if it is externally backing off or not but I feel like that is what is happening. I can't see any way that I'm inadvertently hitting the adjustment. Has anyone ever had this happen? Thoughts?  Thanks in advance.  

Try something first.  Walk out your line ( tie it to a tree or something). Next reel your line in under constant steady pressure. Next time you use the reel adjust the reel properly, back off your brakes, adjust the tension according to the bait you have tied on then reset the brakes.  Now fih the combo and see if you may have just had loose line. Also before you run the line back on the reel after walking it out. Double check your arbor knot is not slipping.

Thanks @fishnkamp I will definitely check that. It didn't act like line slippage on the spool though because  I could thumb the line to hold the fish and crank the drag back up then reel it on in. The star drag adjustment felt loose like it would if you had physically loosened it. It's a good point you make that I need to eliminate that first off.