wowow , lets see whats the big hoo , haa here.
1:export your SKP file as a DAE
2:Open Blender and delete the cube
3:go to File>Import>Callada 1.4
4:now do what is said here
Open .dae in Blender
select one part of the object with rightclick
the select all with the borderselect (key B)
now join all objects with join objects (CTRL J)
now its ONE object
to get the right scale you have to open the transform properties (key N)
the orginal scale is 1.00000
the scale you need is 0.0254
after you chaged all you must apply the changes to the model
press CTRL A followed by key 1
5:now go to File>Export>Giants i3d and make sure its set to export to desktop .
6:open the I3D with notepad or notepad ++ and delete the /assets
7:once done move the I3D into the texture folder named after your model export .
Now its done in theory that should solve most issues , also thanks Gaxi / FSGAXI for your help as i have been away and have neglected the topic.