I have run one.
Found that the jetting was ok as is. But had to slow the secondary opening rate down. Accomplished this by installing a quick change secondary spring housing. Then played with the springs to slow the rate. Black (stiffest) and yellow combo of 2 springs seems to work well for me on the 250.


Inliner Member 1716
65 Chevelle Wagon and 41 Hudson Pickup
Information and parts www.12bolt.com