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Old 01-07-2007 | 03:28 PM
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w8ye
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From: Shelby, OH
Default RE: Clarence Lee Modified K&B .61 engine
The Tower 75 has a better reliability record than the OS 91.

Many of the second series of OS 91FX was nothing but trouble from the mixture going lean.

The current OS 91's with the plastic needle valve are OK.
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