Pridanc

OK, so y'all have convinced me to just walk away :-)     IE, in this case, trying to print them together just isn't worth the hassle and I've no doubt you are right. 
 
Again, both parts have been printed and fit well together.  The bottom part, the block looking bit, was printed at a scale of 100.1 and the bits fit so well together it is scary. I've no doubt if I were to spend some time getting all the settings just right on my printer, I'd not have any need for the slightly larger scale but just laying it out there as my prints fit what I need most all the time. My needs are simple! 
 
Lets mark this as solved OK? 
 
As usual, many thanks for the thoughts and suggestions.  Stay well, PDC

Greg yes, vertical just for the quality of the slight curve. Ironically I've always printed it laying on its flat side.
However, you may or may not recall that I print some PP parts using support that come off just as you suggest.
 
And, as Slash mentions to another poster (I think?) but leaning it over a tad just might do the deed. I may try both.
 
Regardless, Thank you both for the suggestions/ help. Lets call this solved. TYVM

OK, after restarting CURA the second time, I now see under Materials a box to use Linear Advance so...Never Mind!
TY y'all.  PDC

Dustin,
TYVM and no worries. I already have a PP profile and from their own literature feel that I can make the changes necessary.
Lets call this one closed OK?
Stay well, 
PC

OK, I tripped across "toggle full screen" and found a fix