Hi. Persuant to the informative posts above: Abu 55's are not the greatest with fleaweight lures. 1500's, and 2500's are best for the light stuff. 55's are stellar from, say, 1/2 ounce on up to 2 ounces.
The standard way to set the reel up, to minimize backlashes would be thus: Take the cast control knob and tighten all the way tight. Place reel in cast mode, hold the rod on a 45° and slooooowly loosen the cast control knob so that the weight or lure falls to ground, with the spool totally stalling.
Adjust cast cap so the lure falls the quickest, with the spool not continuing to turn once the weight hits ground. This setting will not get you the longest cast, but it will minimize "professional over-runs".
Once you get into using conventional type reels, chances are you will favour them over spin reels.
Oh yeah: Hopefully you have filled the spool to within about 3/32" - 1/16" from the lip, no more, best not less. Any more line than that, if you ever have a problem with the pawl, or line carriage causing the line to pile up on one side of the spool, you will have a ~time~ attempting to get the spool out of the frame, plus: a full spool casts best. Cheers, KD