I don't know why I got such a bad upload quality with YouTube this time, my apologies... I might do this again later with more effort and better quality. In case anyone wanted to see some different methods of editing real acoustic audio multi-Track drums to the grid using SONAR, I made a little video series on it.
 
Check it out if this interests you, if not, please pass it up. Thank you.
 
Video series here

Cool, Charles 
Will check them out.
All the best.

This has been a very needed tutorial Charles. A lot of people are going to appreciate this. Nice job.
 
Here is Method 1

Excellent videos thanks so much!
I've been messing with stretching transient markers across multi-track drums and whilst I'm able to correct timing issues, sometimes the phase relationships don't quite work out (especially on a multi mic'd kick drum).
I'll be using your techniques this weekend :-)

I've mentioned this once before but I recently had great luck quantizing everything together in Melodyne (meaning using it on all clips simultaneously, all set to "percussion" and all notes from all clips selected). I used the "auto grid" and the quantization slider to go to like 85 percent. Much, much better than I thought it would be.

In one case it helped me to first make the tempo constant.

Sanderxpander
I've mentioned this once before but I recently had great luck quantizing everything together in Melodyne (meaning using it on all clips simultaneously, all set to "percussion" and all notes from all clips selected). I used the "auto grid" and the quantization slider to go to like 85 percent. Much, much better than I thought it would be.

In one case it helped me to first make the tempo constant.

I've been looking at trying this method myself. Any phase issues ? or is it pretty straight forward ?

Amazingly it seemed perfectly fine. I haven't tried it enough to make a blanket recommendation but it's worth a try. Mine was a twelve mic part, though I did use Addictive Trigger on the kick.

I'm really into method three right now, it is the one I am currently using the most. I have shied away from any kind of stretching thus far as I cannot allow any artifacts to get through to my clients. I can experiment later when I have some down time with Melodyne, but with the three methods outlined in the videos, I already know there will not be any artifacts. I have Melodyne essential, is that sufficient?

I will report back my findings when I can play around with it. I often get a lot of blast beats with metal bands at my studio so I need to move quickly without artifacts. This is very important. With slicing and crossfading I know it will work. I am skeptical with any kind of stretching but will give or a spin later just to see.

MagicMike
Excellent videos thanks so much!
I've been messing with stretching transient markers across multi-track drums and whilst I'm able to correct timing issues, sometimes the phase relationships don't quite work out (especially on a multi mic'd kick drum).
I'll be using your techniques this weekend :-)

These methods if done correctly will absolutely keep all phase relationships.

I forgot to say thank you, Sylvan! I will definitely try these out!