Ctrl-F key presses fill up undo buffer

I recently discovered a perplexing issue in Final Cut Pro.
The Ctrl-Fkey transport keys apparently are considered actions
by FCP and hence occupy the undo buffer. Using these keys
to shuttle the timeline will effectively wipe out any important actions
previously stored in the undo buffer and replace them with blank
key presses.
Probably not many people use these keys for that purpose however,
some devices do such as the Bella Professional editor's keyboard.
It has a jog/shuttle wheel built in that is configured to use these
very key presses.
Is there anyone who has noticed this behavior or has been able
to resolve it? Incidentally, to use these keys as FCP designates, one
must turn off Keyboard Navigation in the Keyboard & Mouse pref panel
since they are already assigned by the OS.
Dual processor G5 Mac OS X (10.4.8)

Steve, the ShuttlePro looks like a terrific
controller.
To be honest I don't think the design of the shuttle knob is that great, and I don't end up using it as much as I thought I would. It's nothing like the real edit controller shuttles of yore.
By speed select keys are you referring to the J and L
keys or the Ctrl-Fkey's?
I meant the key combos that set a specific speed. As above, thinking I would use the shuttle more I set them to speeds I would actually use - skipping ones that weren't useful to me. It was a lot of work which I'll go undo now...
It WOULD be great to have slow frame by frame play
(JK and KL) on the shuttle as well but like you've
already said, apparently it is unique to those
particular keys.
As long as you map to the actual J K and L keys from buttons you can press individually, it works. It doesn't work with the ShuttlePro knob simply because they only allow one button press to be programmed for each position.
My problem was that I had mapped the ShuttlePro buttons and their functions to new places on the keyboard. The JK and KL functions seem to only work when you're mapping to those actual keys. So I have J K & L mapped to buttons on the ShuttlePro (their default, actually) and it works great.
What really disappoints me is that FCP doesn't support a range of playback speeds that would allow something approximating shuttle behavior.
Thanks for bringing the Undo problem to our attention!

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Attachments:
Catching Alt Key Press Poll with Events(151551).vi ‏89 KB

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Ctrl-F key presses fill up undo buffer

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