I would shoot Les an email.
I think he charges about 30 bucks for handles depending what wood and so on...I can't remember exactly but that's about how much$.
I know Les gets really busy at times but trust me, the wait is well worth it.
BTW, I forgot to mention...Les already knows the sizes really well for Spaz stuff. You won't even need to measure anything, in fact you can send him your PF and he can install it for you or you can just do it yourself.
They do screw off but Spaziale glues them on. You have to grab hold of the handles and just "bust" them off, the glue should snap and release the handle with no problem after that.