I was once forced to buy a TSC front mount distributor. It was a Sunday and the only place open and I needed it badly. Upon prepping for assembly onto an 8N, the rotor would not press down onto the shaft completely and thus prevented the cap from seating properly. The shaft was too high and inhibiting the part from fully seating.I ended up cutting the top of shaft off about 1/16" to make it work. That was back in 200 and from then on I never shopped for major parts there again. Maybe the occasional FRAM oil filter and hydraulic oil yeah, but nothing else. i have worked on tractors with TSC carbs and found them to also be a PITA as well. Like the old Tecumseh engines, muck with settings today and come back tomorrow and do them all over again.
Tim *PloughNman* Daley(MI)