Grasshopper + Centipede to 3ds Max problem

Good afternoon Grasshopper forum. 

I have been learning R + GH for 6 months now and the discussions here have been an extremely good resource. However, I have a question!

I have perhaps been over-reaching my skill set here, but bare with me. 

I want to create an animated facade of squares which rotate depending on a sequence of grey-scale images. I've got pretty far thanks to many discussions here, but have hit a blank with exporting my animated model to 3ds max. 

Here's my GH script - it's a botch of 3 or 4 various things incorporating centipede at the start and end to get the animation. 

All good and it works! It produces animations which I can sequence for presentations too thanks to it's bmp export, which is sort of a side-product. 

What I have a problem is that the OBJs it produces error wildly when imported to max. eg in rhino it looks like

But when I've imported them to max it looks like

and as it animates it just gets longer and smaller. 

NOW I reckon it might be because my model in grasshopper is 100 separate geometries and it'd like it to be a single one - but I've not achieved that. 

Does anyone have any ideas how to solve this? My end result I would like to look like this rendered still from max, but animated. 

Thankyou all! This also uses Firefly, so you might need that installed to see how my file works.