Modifying RF channel of RS modulator

[old_tv_nut]

Well, to illustrate the perverse nature of inanimate objects:

I hooked up the modulator and a D/A converter through a reversed splitter to my CTC-5. Worked fine, except the channel 6 frequency was far enough off to require a good rotation of the fine tuning knob. In the process, the fine tuning broke (doesn't do anything on any channel), so now I'll have to fix that. (It had been binding to the channel selector, and still does, so the break is somewhere beyond the binding point. I'm hoping that there is minimal damage and I just lost some sort of coupling clip or the like.)

Also, the modulator board is fastened to the TOP of the enclosure, which means I can't re-tune the channel 6 frequency without taking it all apart again. When I do that, I'm going to drill an access hole in the top of the enclosure.