Hi AndyTom
Some info. on curves from the R4 handbook (English edition):
F4 (2106) with 800 05/B1B engines: R287 D83
F4 (210B/239B) with low compression (8.3:1) 1108cc C1E 18 engine: R324 C33 (Same as most F6s)
Ditto with 9.5:1 C1E 14 or 688 D7 12 engines: R244 D61 (Same as most GTLs).
Could you tell us the number on your engine plate and the curve number on the distributor?