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My mum's FC Special has a stumble/flatspot that I am having a bit of trouble rectifying. The engine was rebuilt in 1987 but has not done many miles in that time. It is bored to 138, balanced, runs a mild Watson cam which I dialled in, a set of headers and a sports exhaust. It also has a PCV kit fitted. I recently pulled the head and had it worked for unleaded. The dwell is at 38, timing on the datum, vacuum diaphragm ok, throttle pump working fine, no play in the throttle shaft. Stumble goes if I run a 54 main jet but this makes her run to fat. Standard 138 main is 51. Currently running a 53. Float is spot on. Have tried lowering/raising float. Next is I am going to fit a new condensor. I noticed late last night that the points faces are not lining up. The moving point face is contacting the fixed point face halfway down. It is though the points pivot on thre breaker plate is not true. I am a motor mechanic and have plenty of patience. Would like to make the old grey run smooth. Any ideas from any old grey motor heads. Thankyou.