I just replaced (the outside half) of the Trimark on my rig. I found the folks at Trimark very helpful from start to finish.......including excellent instructions that, for once, were not written in "pidgin english". A call might yield the answer to your question (and the correct hardware delivered to your door.)
Best of luck on your project.
Good times and safe travels to ya.
Ed Sievers, Denver, CO
07 WBGO Outlook 31C; Toad: '16 Soul with 6-spd DIY
"Be the person you needed when you were younger"