I asked this question recently. I did not bother.
My logic is that I paid for a chassis with a specific inner diameter. I paid for a precision action with a specific OD.
If both parties did their job, they should be hand/glove (or whatever your favorite comparison is).
Ironically, my action is actually a stiller long action as well, so your exact situation. If it makes you feel better to do it, then great, go ahead.
Just realize you have greater than average risk of screwing something up because there isn't a whole lot of slop that you are correcting for, here, assuming your parts are any respectable level of precision. Get too much compound slopped all over the wrong places and you could end up hurting your bearing surface area instead of helping. That's the risk.
So the end question: do you personally perceive the potential to increase any bearing/mating surface as greater - given your skill level with the compound and your experience doing the bedding - than the risk of making a mess and/or wasting your money?