Freeman Nailer PCN65 Depth Adjustment

I have a Freeman PCN65 nailer and I’m having trouble getting it to drive the nails flush with the work. The nail is either too deep or not driven completely in. The depth adjustment wheel in front of the trigger seems to have little, if any, effect on the depth. I get it adjusted to where it seems OK, then a nail or two later, it’s either too high or too low. Any ideas?

John Mutrux
Merriam, KS