I'm looking to switch from the condenser head on my Omega D2 to an Omega Super Chromega D Dichroic II. However, I'm aware the lift arms are different for the condenser head and the dichroic head (according to KHB selling each arm sets as separate part numbers). Is there anyone that has done this with a D2? The $320 price tag is too much for me to justify, so I'd likely try to come up with a diy solution if the arms are in-fact different. Thanks.