Newby here - funnily enough IBM don't promote this site and I never even knew it existed!

Apologies if this has been covered previously but I've had a quick look and haven't spotted anything.
I have an active form that works fine in Excel but for some reason when publishing it to the Web, I get 3 issues:
1) The column widths are nothing like what they are on the excel version - they are huge with lots of blank space at the end. If you try to shrink the column in Excel it just chops the end off
2) Custom formats don't seem to be applying properly, i.e. at the consolidated level I've applied a custom format in the format area that adds "sub total" to the beginning of the element. This works fine in Excel and is just missed off entirely in Web. I thought maybe it wasn't compatible but the custom format was already there for another item so I just amended it.
3) For some reason, data seems to be missing and it only seems to be on columns that is a manually added column which adds 2 TM1 columns together. I.e. employee costs = indirect costs + direct costs. Some rows show blank and others are correct, so it's not even consistent.
I've logged it with IBM and the first response I got back was that it may be a known issue. Then I got that they couldn't recreate it and to send a stand-alone test case with only the problem items in. I've done this but all has gone quiet now.
Has anyone else seen this before/know of a resolution?
We're on v9.5.0 on Excel 2003.
Thanks