Loop button problems

(Posted similar question in wrong community , managed to sort that problem but now got new issue).

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 using the modifier key.

What I want to do is be able to make my own loop size and then make that loop smaller or bigger as I desire. Problem is say I make the loop then hit the 'loop decrease' button it jumps to what ever size loop is highlighted under the wave form. So for example 1/16, 1/8, 1/4, 1/2, 1, 2, etc. So say I manually make a loop that's like 1 bar in length but the loop size under the waveform happens to be on 32, and then I want to hit the 'loop decrease' button, the loop size snaps to 32 and goes down from there. So basically getting bigger before it gets smaller.

Can anyone help me on this?

Thanks in advance