Need Volvo-Penta gimbal to pivot screw removal tool

[chicojerry]

I am trying to remove the gimbal assembly on my SX-C 1.66 drive unit (on a 1995 Chaparral). The gimbal to pivot screw has 12 points. I tried a Mercury tool-hinge pin (#91-78310) but it is too large for the Volvo Penta screw. A 14M 12 point tool is too small. What is the proper tool to use and where do I get one?

Thanks

[Don S]

1/2" allen wrench and heat to break the locktite.