why does sbocheck/slackpkg want to downgrade certain packages?

I have slightly modified a few slackbuilds, built and installed the packages. Now it looks like sbocheck wants to downgrade them. I didn't make any changes in /usr/sbo/repo but copied the modified slackbuilds to my home folder. Is there some quirk/convention of naming that is causing problems?

Code:> sbocheck

Updating SlackBuilds tree...
Updating files: 100% (35177/35177), done.
HEAD is now at cc056687aa Fixed typo
Checking for updated SlackBuilds...

fakeroot 1.25.3 < needs updating (1.23 from SBo)
kaffeine 2.0.18 < needs updating (1.3.1 from SBo)
Also, slackpkg+ wants to downgrade my qemu which was built and installed by sboinstall:
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