I just bought a used (but like new) powermatic 412 planer… beautiful machine, works like a dream.. But I am looking towards the future.. Blades, parts and such.. Does anyone know if any other blades will fit???I know that the 6291131 blade is also A Jet #..but cant find them either… You do a search on google for powermatic 412 and you dont get much… Was they jyst not popular?? I found a manual (if you call it that) not alot of info there.. If anyone has some wisdom to share please do…Thanks!