You should not have to mash the button hard to get the Mini to fire. Make sure you are just pushing enough to make contact. You can test this easy with the cap off the RM2 and watching the coil when you push the button. Just push till it makes contact. Too much pressure on the button can over time wear the firing mechanism. It will also have the tendency to push the battery to the side and make contact difficult.
A coil of 1.5 to 1.8 should be fine on the Mini. I run mine around 1.2. The drawback is the battery will not last long at all.
Worst case scenario you send the RM2 and Mini to Robert for a check. He can spot any problems and get it back to you quick.
A coil of 1.5 to 1.8 should be fine on the Mini. I run mine around 1.2. The drawback is the battery will not last long at all.
Worst case scenario you send the RM2 and Mini to Robert for a check. He can spot any problems and get it back to you quick.