Hi Craig
I'm told that all the Sears out of a TX CD unit will drop into a Venom Mach1 case but I've not tried a TX blade in a Rekord.
My TX/LGU/77 hybrid has a custom trigger blade in it which I think is a copy of a Mach1 blade, this is the nicest trigger setup I have --- I think these blades are available from V-Mach as the custom TX200 blade but I can't find any info on them.