Al,

I actually just shortened the collar ties and moved them up about 6',
then reinforced each rafter from the kneewall to the peak. The collar
ties are still in place, so I should have indicated that after I moved
them, I reinstalled them up higher.

Regarding the R-30, since I only have 2x6 roof rafters, I think that
R-24 is probably about as high as I'm going to be able to get. Do you
have any ideas how I could achieve more than the R-24 (afforably, of
course)?

Thanks,

Jason