Does any know how hard it is to convert a Knight MK85 from precusion cap to a 209 primer using the conversion kit? Also I have always used loose powder for this gun and would like to switch to the pellets. I use 150 grains of loose so should I use 150 grains of pellets or should it be less. I know that I need to go and shoot to see what works best I am just looking for a starting point.