I know it's been a while since this thread started, but I just got my Buck 124 back from Sunrise River, and wanted to say that it is now a usable knife.
I liked everything about the model 124 when I got it over a year ago, except the grip. It was just too big. It felt like I was holding onto a 2x4. So I didn't use it much. Sometime last month I got tired of seeing it just setting around without being used, and so I emailed Sunrise River Custom Knife and talked with Jay Maines.
He suggested that I get some white clay, cut off a piece about the size of the knife's grip and squeeze it, then send the knife and clay with my grip impression to him so that he could trim down the handle to fit me.
I just got it back this morning and it fits my hand perfectly. It also looks just as good and it did before I sent it to him, with no scrape or buff marks that don't belong. It is now a very usable knife. It only cost me $45.00 labor and $15.00 S&H. I should have done this a lot sooner.