Hi Form Members. Today I,m on the bum.. I,m looking for the latest design unloader valve to install in my 1956 Fordson Major Diesel. Presently it has the original old design . Part # E1ADKN-994601. They were used till August of 1958. After that date E1ADDN-994601 was used in production of the Fordson Power Major & some late production Fordson Majors .. . Both designs used the same part # seat. E1ADKN-994608. I live in Canada & can,t find a parts source. Not even on EBAY. In summary , if anyone can tell me where I can get the PFM relief (unloader) valve it would be appreciated. .Used is fine if in usable condition. These Power Major valves had 6 holes drilled thru the body around the tip to prevent the necessity of a re-set of the control lever , to reseat the un-loader valve , to re-gain working hydraulic pressure. Even if a new design is,nt available I can modify the old style valve to prevent re-set , if the newer one is,nt available. Hoping someone may have what I,m looking for in their garage or in the junk. Il,ll post a picture of the parts.