If you check with Kamui, they have a list of "authorized installers". Their tips need a bit of a different method to install, think it has to do with how you need to trim it using a lathe, too much heat can cause the tip to come apart.
I agree with looking around to find a good tip repair person, I have had a shaft messed up a bit with the tip looking like it was half melted instead of nice and round before from just dropping it off at a pool room for whoever to install it.
The only person that works on my cues is Mike Webb or someone he would recommend, learned the hard way that saving a 30 minute drive is not worth having to re-do the work anyway LOL