Keep or Ebay...Mag 25

Do you mean the penn mag 525?
If so this reel can be a bit of a handfull even for a pro if now set up correctly. Firstly you need to have the right oil in the bearings, too thin an oil will make the reel run too fast. I find red rocket fuel works best for me. You need to remove the bearings in the spool and the ones at each end of the spindle, swill them in lighter fluid and relube with a thick oil. If your not sure how to do this there are plenty of websites explaining this, try www.veals.co.uk or www.neilmackellow.co.uk/. There are also books and videos available on the subject, try niel macellows going the distance video. Explains how to tune a penn mag and abu elite and has casting tuition. I believe john holden has a new book available too. try www.johnholden.co.uk

Also with the mag its important not to use too thin a line. It works best with lines beteen .37 and .40. And don't fill up the spool too much keep the line level wbout 3-4mm below the rim.

One more very important point, keep the mags all the way on 8 for fishing. U can back them off one or two notches if the winds behind you, but best keep them all the way on.
Once you do this you shouldn't have any more problems with the reel. If it is still blowing up perhaps your casting style is at fault. Keep it smooth. All the sites i've given you will say the same thing.

Hope this helps.