Is this normal?

[JERRY2KONE]

Most of the motors that I have seen in teh commercial industry are manufactured to some pretty stricked tollerances, but I have noticed that a lot of the R/C motors seem to have a lot more end to end thrust movement than I am used to. It does seem a bit odd though. For companies making such high end motors for racing and whatnot you would think that the tollerances would be a little bit tighter.