Thanks Jeffrey. Not trying to make things difficult. Trying not to make a mistake I will regret. To a pro, a rookie's caution may seem silly. But we are all rookies at one time or another.
Speaking of not making a mistake...
As Magfan pointed out, it's going to be difficult to mount the new caps to the crossover board, as they are MUCH bigger than the stock caps. Can anyone make a suggestion as to how the new caps can be secured to the board, which is mounted vertically inside the speaker cabinet. No, I can't go external.
BTW, I did discover that ClarityCaps MR will be available in March from Parts Connexion in the value I need - 3.6uF. I'm now leaning toward a combination of ClarityCap MR and Mundorf (not sure which one). Both have their proponents, so I may just split the difference.
Bryon