I'm heading into the golden forties and living in southern Norway.
I'm an engineer by profession and have mostly been working with a wide range of measurement technology.
For some five years now I have been making my own FAME from VWO and by now partly run two Mitsubishi Expos, two tractors and one M35 style military truck on this stuff.
While browsing the internet i found that someone had produced a diesel bike (Enfield) and even found an ad here in Norway of a bike for sale.
Promtply bought it as for "research purposes", I told my wife
But the Greaves powered Enfield is a disaster when it comes to practical use, especially highway use is a nightmare
So I bought a little turbo for the Greaves 
, but lack of information about others experience about fitting a turbo to a single cylinder diesel and lack of lubrication (need some pressurized oil) made me ditch the turbo for the time being 
I then bought a new engine (Yanclone 406 ccm) that I figure to mount sometime during winter 
I then came upon the issue about variable timing for these actual generator engines in some other posts and got interrested in doing the modification to the plunger. I've checked several chinese sites that sell these pumps (M117 for the 186F) but they haven't really got that good webshops yet. No deal so far...
So the
is : Where else can I get these pumps? ten pieces should be enough for trying out several plunger modifications....
! I'm in the same vote - unable to source a variable pump, still using the fixed timing pump, although for me its working fine as the bike is ridden on high speed highways most the time so timing is set accordingly and starting etc is still OK.