Motortrike Rear caliper Bleeder thread size

I got an 05 Motortrike spyder 2+2 kit WITH the Disc brake upgrade.
I want to replace the bleeder screws with Speed-bleeders, and I noticed that the bleeders on the calipers are NOT the same size as what you would find on a regular untriked GL.
So does anyone have either....
A) a lead on what the thread size is to ask for at the speed bleeder site.
B) the thread size of the bleeders currently ONE the calipers
C) perhaps you have already replaced yours WITH speed-bleeders, and have the actual speed-bleeder part number.

Thank you in advance.
Oh yeah any lead on a part number for the pads...

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