I grew up working with many different tractors and equipment, my gramps had an International Harvester dealership, trucking and lime spreading, and several farms. We had the 8N, a couple genuine Jubilees, Fergie TO20s, IH 340, all with Wagner step-thru loaders for the lime spreading. He sold Farmall Ms, Hs, then the number series into the 06 series, we had a pair of Ms and a TD6 when I was little, then a pair of 706Ds and my uncles Deere 420 popper. Have had my own stuff, an M and Super M, Deere B and a 430W (that I traded for the 850/loader), a pair of Super M Diesels, all have moved on to new homes. Presently a Super M T/A that came from the original owners, a strong 450, and 330, 340 and 350 Diesel Utilities, always have a few skiploaders around as profit projects. Just drug home a Deere 70, one of the larger "poppers" that is sitting with the cylinders full of brake fluid, hoping to get it un-stuck. Most of these old buggars, and the 8N in particular, were designed to be very simple and easy to work on, so the average farmer could maintain them, unless they really shit the bed, which was usually from abuse or lack of maintenance. My point is these old buggars are brutally simple, carbs and distributors are crude but work fine with minimal maintenance, and if you tinker with them keeping in mind that they are 40's and 50's technology, can be a lot of fun- so I try not to over-think them. It's amazing the ways the engineers made things work back then, and when you park that Deere 70 next to a Farmall M or the Fords, they couldn't be more different in design, but did the same work. The Funk stuff is fun, as they re-used as many components as possible from the original tractor and still kept it simple