MJ-808, great, this one is easy to fix with new driver, you can use mobydrv, it’s a ordinary NANJG 105C driver with special software (mobydrv) made by DrJones (he is somewhere here 
), you can use, lets say, XM-L2-your preferred color, Nanjg 105c with extra 2 x 7135 chips and mobydrv software. You will lose only one thing: color led indicator about battery status…
Short wideo how it works -> here.
I thought to get this one for MT-G swop and just remove all emitters and put mtg instead but I don’t know how hard it will be to find appropriate size reflector!!!