WTB ESR or PROCROSS 265 domes

Hello!I'm in need of 265 domes.I called ESR and was told that they do not make them anymore.I also have a Pro Cross head if anyone has 265 domes for that.My current head is ESR on a PROCROSS PV cylinder,and the dome is the flat dome for the CR250 piston.Nothings wrong with it,but I was thinking of trying the YZ 250 piston,because I have two YZ thickness spacer plates from my SPARKS cylinders,and also,PROX pistons does'nt make the CR250 big bore piston anymore.I can't use the YZ piston with the flat dome of course,because the YZ piston is rounded on the top.Thanks!Keith