Pirazzi TMS Choke Tubes

CRFPilot

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I have a Pirazzi TMS with 5 choke tubes.
I would like to know what choke these tubes are considered to be.
e.g. which one is Full Choke, Modified Choke, Improved,etc.

The tubes are marked with the numbers, 4, 5, 9, 10 and one is unmarked.
I tried calling the California based Pirazzi but the phone number has been disconnected.
Can anyone help me out ?? Thanks !
 
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