I currently have a modified Delta 50-760 dust collector that was originally rated at 1200 cmf (see pictures). I have added a cyclone and cartridge filter to the dust collector. After I purchased and started using a 25" dual drum sander I am finding that the dust collector is not quite enough. So my question is should I modify my existing setup by adding a larger impeller and motor, or would I be better off purchasing a new dust collector? What size dust collector would I need to be able to effectively control the dust on a 25" dual drum sander?