I've read through all the reads I could find and couldn't find a definitive answer. Is there a difference in the fixed end support? For instance there are a ton of C-7 quality fixed end supports on ebay fairly reasonable but is there any difference between them and a support for say a C-3 ballscrew. They both do the same job, preload the ballscrew so why make two different ones. Anyone know a definitive answer. I got a good deal on a new C-3 ballscrew and need a fixed end support, but don't want to spend a ton on one either.