We're making a drawing of a circuit card and for some reason the drawing file size has balloned to over 300MB.

The drawing is only 4 pages and the assembly file is only 12MB.

Similar drawings have only been about 35 MB max.

When we try to open/save/redraw/check-in/check-out/change sheets the system hangs for quite some time.

Any ideas why this particular file is so huge or how to trim it down without redoing all the work?

Thank you!

system spec:

SW2014, SP2

Intel i7 3770

Quadro 4000 driver 9.18.13.2049

24GB RAM