1972 Triumph Spitfire

Engine Mechanical problem
1972 Triumph Spitfire 4 cyl Two Wheel Drive Manual

Have rebuilt engine and has great oil pressure if you spin the oil pump with drill, however the gear between distributor and oil pump doesn, t go down far enough to engage into the oil pump drive shaft. Have tried to install several times so I am convinced it is dropping as far as possible. The pin in the gear is OK and not sheared.
Any help appr.
August 17, 2009.

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