Chosen Solution

My r button is working but it is sticking when you press it , it stays down and wo t come back up you have to press at the side for it to release again

Hi, All the triggers below the L/R buttons include a micro-switch beneath the plastic cover. My advice to you if to open it and clean with alcohol the micro-switch. This works in 90% of cases. If still affected you will need to buy a micro-switch replacement remove the old one and solder the new one. Good luck and good repair. JM