My throttle can open on its own in certain situations and this can be a bit alarming.  The cable must get caught on the little velcro tab on the bar pad.  Are my cables routed correctly?  It looks like the throttle cable could go over the clutch line but then the clutch line may pull the cable also.  I could try running the pad cover inside out or maybe attaching the the pad on from the bottom with tie wraps.   Or...is this why Betas come with the special pad...which I don't have.   

 

 

Mine didn't come with a bar pad. Just a rubber dingus that fits over the bar clamps.

I think you need the correct bar pad! That looks like quite a large / bulky pad.

ive tried one of these on my bike m8 renthal pad. i would suggest take it off pal i tried different things and it is the velcro that catches the throttle cable when your going left to right, you can actualy get a beta pad, its not anywhere as big as that and is rubber that goes over the handlebar clamps, they fit both the hinge type and standard clamps and defo dont catch the cables

This is what you want

 

 

 

 

 

 

 

Get the jitsie bar pad, I have one on mine, It's smaller than the renthal and you can angle it down to clear better.

i use an s3 bar pad, its alot smaller that the renthal, around 15 pound on trialendurodirect,

 

(if you want a standard one im sure if you contact beta uk direct they will have them) they are very very helpful