Source: http://www.swimbait.com/techniques/problems.htm

Anytime you are dealing with hand-crafted products there will be varying degrees of quality. At Big Hammer we do everything we can to produce the highest quality lures possible. We stand behind our products and will replace baits that are defective.

The following information is provided to help users understand the problems, why they may happen, suggest ways to repair the problems or suggest ways to avoid the problems in the first place.

Swimbait sliding down the jig head:

This is a problem that happens with all soft plastic lures that are rigged on a jig head - hand-poured or injection-molded. Occasionally the swimbait will slide off of the baitholder and down the shank of the jig head. This is usually caused by a fish pulling on the bait or will sometimes happen after pulling the bait out of a snag. Putting a drop of Pro's Soft Bait Glue on the baitholder of the jig head prior to rigging will eliminate this problem. Regular super glue doesn't work nearly as well as it tends to "eat" or dissolve the plastic rather than sticking to it.

De-laminating or "splitting" baits:

One problem with multi-colored hand-poured lures is that occasionally there will be a bait that will split along the color line when rigged on a jig head. There are several reasons this may occur.

Most of the time this is caused by using a jig head that is too large for the size bait you are using. For Big Hammer swimbaits that are 4 inches and larger we do not recommend using any jig head where the bait holder on the jig head has a larger diameter than 3/16 of an inch. This includes the Hammerhead 2.5 oz. Super Shad jig head. If you do need to use a jig head this large we recommend heating the entire front of the bait prior to rigging (lighter or soldering iron will work). Heat until just before the plastic starts to run then turn the bait "head up" and let cool. This will help fill in any tiny or invisible imperfections and will help make the front of the bait stronger and able to better handle an oversized bait holder. Another option is to use our 1.5 oz. Super Shad jig head directly below a 1 oz. (or larger) egg sinker.

Another cause of de-laminating baits is to allow a rigged bait to get too hot. In some of our tests temperatures above 130 degrees have caused a small percentage of rigged baits to de-laminate.

Yet another cause of de-laminating baits can be a manufacturing flaw or unknown change in plastic or manufacturing materials. While this problem is typically rare there is really no way to forsee it. We typically test each run of baits by rigging several of them on extra large jig heads and heating them.

A de-laminated bait can be fixed by melting the bait back together or by putting a line of Pro's Soft Bait Glue on the inside of the split part of the bait and holding it together for a second until it sets. We do not recommend using regular super glue as it tends to "eat" or dissolve the plastic instead of binding with it. Melting a bait back together is much easier than it sounds.