You might try heating in hot water and then clamping to a metal straightedge while cooling. I put horn tip overlays on my bow tips and this is how i get them to follow the curve on the recurve tips. Then i just glue them on and go to sanding. No gaps or glue lines.
I have enough blocks to fill a USPS LFRB. All are 2”-2-1/4” thick x 2”-4” wide and from 5-3/4” to 12” long, fairly dry and sprayed for bugs with Bora -care. Sealed ends. Most will need stabilized. $45.00 with shipping included. Works out to $22.20 for the wood and $22.80 for the UPS click and...