Off topic a bit.. But, 38ac what is the latest (newest) model genuine Lister CS 6/1, 12/2 etc you have had in your shop? 60's 70's 80's ? Did the newer models have any significant changes from the mid 1930's to about the mid 60's? Just curious. Thanks.
Edit: Maybe a dumb question, probably because they did not change a dam thing since losing the changeover valve..Was more interested in the last few years of production..