My experience is they will not enter change, but with a little filing the make for the best mould handles I have ever used and now that is all I use and prefer them over all others. If one takes the extra time to drill and tap 2 holes on each attachment finger while using set screws as not to get in the way you can adjust the mould block movement to just about nil. The blocks will very easily close perfectly eliminating all wear on the alignment pins and holes and make casting considerably more enjoyable. It is also no unusual to have to bend one of the fingers either up or down a tad if need be and is a simple task if you have a vice and a crescent wrench. If need be of which has only become nesaccary one time occurance for me was the need to twist one of the fingers slightly, another simple process and along with those that have been mentioned if required well worth the extra effort.

JLouis