I often get in knives to be rehandled that are in poor condition from the maker. Certain brands are pretty much guaranteed to have some particular problems associated. Without the handle maker addressing these issues then all the customer can expect is a prettier handle with the same fit 'n finish problems.
Below is a typical example of a Teruyasu Fujiwara that has angled (not square to the tang) uneven bolsters that are different on the top & bottom and also rounded unevenly where it joins the tang plus the tang has been ground into with a belt, cut off wheel, or stone wheel in several spots....
In this example, should I leave the metal as is (from the maker) the result will show similar to what we see here, with glue lines/filled holes in the tang and along the bolster with a very poor fit up. This would be the quickest and cheapest thing to do but as mentioned above, all the customer gets from going this route is a fancier looking handle.
Instead, I prefer to remove the maker's mess, grind the tang down to a hidden style and square up the bolster in all directions. This is more work, and more expense, for the customer but it is the correct thing to do if what is desired is top quality workmanship.
I'm showing you this so that you can examine your handle(s) pre-shipping to see what problems may arise and need addressing prior to re-handling your knives. It's not always going to be so clear as the above example yet if you look close enough you will see things that I too will see and have to bring to your attention.