I have been doing some research on o/u actions (types/function) and the issue the Maverick HS12 (stiffness only when cocking the hammers) is because they used the same springs from the longer barreled (Maverick Hunter 28" barrel)
Do a spring check. Open the gun after it has been fired, then close it. Open it again without firing it. Was it easier to open? If it was easy to open you need to put some weaker or shorter springs in the gun. Then it will be easy to open.
I will be cutting off a single coil at a time and see the difference in the ease of the "cocking the hammers" before deciding if it needs more
Do a spring check. Open the gun after it has been fired, then close it. Open it again without firing it. Was it easier to open? If it was easy to open you need to put some weaker or shorter springs in the gun. Then it will be easy to open.
I will be cutting off a single coil at a time and see the difference in the ease of the "cocking the hammers" before deciding if it needs more