Just a rough guess here, 1.95 assembled, .700 lift minus .020 guessed valve lash, puts the springs at .180 to coil bind. Not too good. You can try PAC or PSI springs that will tighten it up a little, give you a little more seat pressure, maybe change the harmonics and help with coil surge. My SB2's came with Comp 947's, a comparable spring but not the quality they used to be when PAC was the supplier. Mine sit about the same height as yours and run right at 305 seat pressure. I had to tighten them up on the exhaustfrom how they were set up when I got them. 7 races and a dyno session and still look good. As far as surge, here is some good reading.
http://speedtalk.com/forum/viewtopic.php?t=8019