how would i map this?

This gonna be hard to explain so bare with me. I got my loop set to an instant 2 bar loop at the push of a button. But I got my loop IN point set on the modifier key when I hit the same button and then the loop out on a separate button, so I can do manual loops of my desired length instead of instant 2 bar loops. Following me so far?

I like having the snap mode on cos it mean I can get perfect loops. But what I want to do is have snap mode turn off when I use the manual loop in and out function. I have set the snap button to the modifier key and got it on 'hold', so that when I hit 'loop in' and 'loop out' on manual mode the snap feature is turned off. Problem is it not registering the snap button in time. Its doing what I want but not quick enough so it stays in snap mode as I hit 'loop in'. Still following me?

the only option I can see is to have the snap function mapped to a dedicated button... not a massive problem but it would be nice to not have to believe about it.

Any help appreciated.

thanks in advance