I'm not able to upload the files. I get the following message:

Shed_Frame v2.3.skp => The file is too big, maximum allowed size is 4 MiB

The file size is 7.8M each. It is a timber frame shed that is assembled using dovetail mortise & tenon joinery. There really aren't many small faces - at least not many compared to most of the complex models I've seen. I had intended to give you a copy of the file before & after running Cleanup.

Is there another way to get you the files?

I downloaded and ran the Cleanup 3.1.9 plugin and received a message when it finished that there were 1303 errors and I should contact the author.

1303 errors occurred. Please report the error and sample model to the author.

1303 - Face merge resulted in lost geometry!

How do I do this?